Unofficialllyy
  • Unofficialllyy
Please help I will fan and medal!
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
Unofficialllyy
  • Unofficialllyy
Find the measure of angle x. Round your answer to the nearest hundredth. (please type the numerical answer only)
1 Attachment
Unofficialllyy
  • Unofficialllyy
@welshfella Could you help?
Unofficialllyy
  • Unofficialllyy
I have this question and another just like it and then I am finished with my homework.

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More answers

welshfella
  • welshfella
sin x = opposite side / hypotenuse = 8 / 17
welshfella
  • welshfella
SOH-CAH-TOA - have you heard of that memory aid?
welshfella
  • welshfella
calculate 8/17 then use ur calculator to find the value of angle x enter sin-1 (value of x)
welshfella
  • welshfella
firrst use ur calculator to find 8/17 also!
Unofficialllyy
  • Unofficialllyy
So when I do 8/17 I get 0.47
Unofficialllyy
  • Unofficialllyy
Is that right?
welshfella
  • welshfella
more accurately its 0.4706
Unofficialllyy
  • Unofficialllyy
Then how do I do sin-1 on a calculator?
welshfella
  • welshfella
now thats the sine of x so to find x you use the sin-1 function on your calculator
welshfella
  • welshfella
there should be a button for it - you probably have to press the shift key as well - it must be a scientific calculator
Unofficialllyy
  • Unofficialllyy
0.4899?
welshfella
  • welshfella
no - x should be an angle between 20 and 30 degrees
welshfella
  • welshfella
have you got your calculator set to radians?
Unofficialllyy
  • Unofficialllyy
I'm not sure
welshfella
  • welshfella
because that would be the value of x in radians
Unofficialllyy
  • Unofficialllyy
I have a scientific calculator, but I don't know how to put in sin-1
welshfella
  • welshfella
is there a set up key on ur calc?
Unofficialllyy
  • Unofficialllyy
this is the exact calculator i have
welshfella
  • welshfella
well you must have put sin-1 in correctly or you wouldn't have got 0.4899 which is exactly right in radians.
welshfella
  • welshfella
press SHIFT SIN-1 then 0.4706
Unofficialllyy
  • Unofficialllyy
28.07?
welshfella
  • welshfella
yes thats correct
Unofficialllyy
  • Unofficialllyy
And that would round up to 29, correct?
welshfella
  • welshfella
you need to press the mode button to change rad to deg right?
Unofficialllyy
  • Unofficialllyy
Yes I figured out how to do that
Unofficialllyy
  • Unofficialllyy
Find the measure of angle y. Round your answer to the nearest hundredth. (please type the numerical answer only)
1 Attachment
Unofficialllyy
  • Unofficialllyy
This is my last one
Unofficialllyy
  • Unofficialllyy
Would the first one stay 28.07 or would it go up to 29 for my final answer?
welshfella
  • welshfella
no you need to round to the nearest 1 hundredth - that's 28.073 ---> 28. 07 the second place after the decimal pont is the hundreds so the answer is 28.07 degrees
Unofficialllyy
  • Unofficialllyy
Okay :)
welshfella
  • welshfella
apply SOH-CAH-TOA sin = opposite / hypotenuse cos = adjacent / hypotenuse tan = opposite / adjacent opposite angle y is 5 adjacent to angle y = 14 so which trig ratio , sin cos or tan do we use?
Unofficialllyy
  • Unofficialllyy
Tangent
welshfella
  • welshfella
right! so we have tan y = 5/14 now you can find y in a similar way as for x in last problem this time use tan-1 on ur calc
Unofficialllyy
  • Unofficialllyy
19.651?
welshfella
  • welshfella
5/14 = 0.35714 enter SHIFT Tan-1 0.35714
welshfella
  • welshfella
yes
Unofficialllyy
  • Unofficialllyy
Which would be 19.65
welshfella
  • welshfella
these are quite easy after you've practiced a few
welshfella
  • welshfella
yea
Unofficialllyy
  • Unofficialllyy
Yeah I think I will get the hang of them. Thank you so much, you were such a big help!
welshfella
  • welshfella
yw

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