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Given quadrilateral ABCD with AB = 47, BC = 31, CD = 61, angle B = 117 deg and angle C = 76 deg. FIND:
1. AD
2. angle A
3. angle D
4. AC
5. BD
NEED YOUR HELP PLEASE! GONNA PASS THIS TOMORROW! THANKYOU!
 one year ago
 one year ago
Given quadrilateral ABCD with AB = 47, BC = 31, CD = 61, angle B = 117 deg and angle C = 76 deg. FIND: 1. AD 2. angle A 3. angle D 4. AC 5. BD NEED YOUR HELP PLEASE! GONNA PASS THIS TOMORROW! THANKYOU!
 one year ago
 one year ago

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ajprincessBest ResponseYou've already chosen the best response.0
Have u got a diagram for this @ienarancillo?
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
no @ajprincess . :( sorry. it's my homework and i really can't understand. PLEASE HELP
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
last one please. @ajprincess In the figure, DB =16, angle BAD = 13 deg and angle ABD = 22 deg. Solve for CD. THANKYOU!
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
@Callisto please help. :'(
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Are you posting two questions here?
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Not sir :S I'm not a guy. Please do not post two questions in a single post! For the first question, since the diagram is not given, we need to draw one ourselves. dw:1350743930628:dw Step 1: find BD, can you?
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
OMG! sorry! i didn't mean to! :'(
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
It's okay :) Can you find BD?
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
By considering triangle BCD.
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
i'm going to try solving it now. :)
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Tell me if you need some hints or so.
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
can i have a hint please. i am very confused in finding the angles which are along the transversal lines. :(
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Use cosine law. a^2 = b^2 + c^2  2bc cosA
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
so.. i drew a separate triangle for this.
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
\[\sqrt{76^{2}+31^{2}2(76)(31)\cos(76)}\] = 69.7 BD = 69.7
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
sorry it took so long. :"(
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
@Callisto Is this correct? please help.
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
You typed CD = 6 :S Anyway. No, it's not correct though :
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
OMG! so sorry again! :(
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
then what should i do next? :)
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
how should i find the angles? :)
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
You have to find BD first, and the BD you found is not right. Plug in 61 instead of 76
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
oh. sorry. is it 61.4? @Callisto
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Yup. Next step: Find angle CBD
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
i used sine law for this. \[\frac{ \sin 76 }{ 61.4 } \frac{ \sin \angle CBD }{ 61 } = 74.6 degrees\]
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
@Callisto is this it? :)
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Yup. So, now, find angle ABD.
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
11 61.4 = 42.4 :)
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
i menat 117  61.4 = 42.4
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
@Callisto what should i do next? thanks so much for ur help.
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Next?! Find AD :D By considering triangle ABD.
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
sorry. honestly, i ought to do the same thing. :D
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
uhmm, i was solving it before you replied. i asked you just to be sure. :D is this correct? :) @Callisto
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Wait. It should be 117  74.6 = 42.4 And the answer you've got is wrong..
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
OMG. so sorry again, i just typed it wrong. but i guess, 42.4 is right? :)
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
and is my AD correct? :)
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
sorry. i'll sum up all the remaining 3 answers. im sorry to bother you. but im in the process of understanding it now. :)
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
It's okay :) Glad that you're understanding it now :)
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
are my answers correct? :)
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Wait... AD isn't 41.8
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
It's close to 41.8, but not 41.8
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
carelessness of mine. it's 41.4? :O
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
but it's math error when i'm solving for angle a.
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
It should be sin A/ BD = sin angleABD / AD
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
yes. i did that. \[\frac{ \sin \angle A }{ 61.4 }\frac{ \sin 42.4 }{ 41.4 } = MATH ERROR\]
 one year ago

CallistoBest ResponseYou've already chosen the best response.2
Hmm.. can you round your answer above to 4 d.p.? That way, you can get the answer!
 one year ago

ienarancilloBest ResponseYou've already chosen the best response.0
uhmm, our instruction says 'all answers must be rounded off to the tenths place'. :'(
 one year ago
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