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kenneyfamily
 2 years ago
If A=42.2degrees, B= 13.6degrees, and a=41.3, find area of triangle ABC
kenneyfamily
 2 years ago
If A=42.2degrees, B= 13.6degrees, and a=41.3, find area of triangle ABC

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jayz657
 2 years ago
Best ResponseYou've already chosen the best response.1we need to see how the triangle looks like otherwise we cant say anything about it

zepdrix
 2 years ago
Best ResponseYou've already chosen the best response.0dw: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 :)

zepdrix
 2 years ago
Best ResponseYou've already chosen the best response.0Area, hmmmmmmmm I'm trying to rememberrrrr :3

jayz657
 2 years ago
Best ResponseYou've already chosen the best response.1area of triangle = bh/2 how do you know what the height is?

zepdrix
 2 years ago
Best ResponseYou've already chosen the best response.0We 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

kenneyfamily
 2 years ago
Best ResponseYou've already chosen the best response.0a)138.8 b)327.4 c)493.8 d)246.9 those are my choices

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0@zepdrix : Just use Tan to find the height and then use the triangle area formula.

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0Ohh wait. It's not a right angle triangle.

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0Use the law of sines then. Lot easier.

Dido525
 2 years ago
Best ResponseYou've already chosen the best response.0Solve for b which is the height and then you have everything else.

kenneyfamily
 2 years ago
Best ResponseYou've already chosen the best response.036.292 is the height right?

kenneyfamily
 2 years ago
Best ResponseYou've already chosen the best response.0hmm thats not right

jayz657
 2 years ago
Best ResponseYou've already chosen the best response.1we 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
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