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If A=42.2degrees, B= 13.6degrees, and a=41.3, find area of triangle ABC
 one year ago
 one year ago
If A=42.2degrees, B= 13.6degrees, and a=41.3, find area of triangle ABC
 one year ago
 one year ago

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jayz657Best ResponseYou've already chosen the best response.1
we need to see how the triangle looks like otherwise we cant say anything about it
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
dw:1353222533411:dw Hmm i don't think it really matters what it looks like :D we have 3 pieces, angle angle side, so we should be able to figure something out. hmmmmmmmm This is not drawn to scale, so my bad :3 just to give us a rough idea. Angle B should be much smaller though :)
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
Area, hmmmmmmmm I'm trying to rememberrrrr :3
 one year ago

jayz657Best ResponseYou've already chosen the best response.1
area of triangle = bh/2 how do you know what the height is?
 one year ago

zepdrixBest ResponseYou've already chosen the best response.0
We could use the information we have, solve for the missing sides using the law of sines or cosines or something, and then apply heron's formula... I'm not sure that is the most efficient way though XD hehe
 one year ago

kenneyfamilyBest ResponseYou've already chosen the best response.0
a)138.8 b)327.4 c)493.8 d)246.9 those are my choices
 one year ago

Dido525Best ResponseYou've already chosen the best response.0
@zepdrix : Just use Tan to find the height and then use the triangle area formula.
 one year ago

Dido525Best ResponseYou've already chosen the best response.0
Ohh wait. It's not a right angle triangle.
 one year ago

Dido525Best ResponseYou've already chosen the best response.0
Use the law of sines then. Lot easier.
 one year ago

Dido525Best ResponseYou've already chosen the best response.0
Solve for b which is the height and then you have everything else.
 one year ago

kenneyfamilyBest ResponseYou've already chosen the best response.0
36.292 is the height right?
 one year ago

kenneyfamilyBest ResponseYou've already chosen the best response.0
is 41.3 the base?
 one year ago

kenneyfamilyBest ResponseYou've already chosen the best response.0
hmm thats not right
 one year ago

jayz657Best ResponseYou've already chosen the best response.1
we do not know the height so use this formula Area = 1/2 ab sin(c) we need a side so use law of sines 41.3/sin(42.2) = b /sin(13.6) b = 14.4575 angle c = 180  42.2  13.6 = area = 1/2(41.3)(14.4575)sin(124.2) area = 246.93 so is D
 one year ago
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