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TNNG
 3 years ago
Solve the triangle.
B = 36°, a = 41, c = 20
TNNG
 3 years ago
Solve the triangle. B = 36°, a = 41, c = 20

This Question is Closed

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0b ≈ 27.5, C ≈ 115.5, A ≈ 28.5 b ≈ 45.3, C ≈ 25.5, A ≈ 118.5 b ≈ 45.3, C ≈ 29.5, A ≈ 114.5 b ≈ 27.5, C ≈ 25.5, A ≈ 118.5

terenzreignz
 3 years ago
Best ResponseYou've already chosen the best response.0You arrived at a solution, @TNNG ?

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1Use law of cosines to find b then use law of sines to find the rest of angles.

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0ok so just use to law of cosines and i should get the answer

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1Well, you're not finished, since you still have to find A and C so use law of sines for this.

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0i don't get it i got the D for my answer is that correct

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1The Law of Sines: \(\Large \dfrac{\sin A}{a} =\dfrac{\sin B}{b} =\dfrac{\sin C}{c}\)

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0i know that but i don't get how to plug it is plus i tried it again and got Choice B

terenzreignz
 3 years ago
Best ResponseYou've already chosen the best response.0Well, you could certainly use the law of Cosines to arrive at all the other missing parts of the triangle, but that's really cumbersome, compared to the simpler looking law of sines.

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1Yeah, it's only way to find the b. You just have to use it once, then use law of sines and you're good to go. You don't have to use entire formula, just use part of it, like \(\dfrac{\sin B}{b} = \dfrac{\sin C}{c}\) Is this clear?

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1The law of tangents is really cumbersome compared to the law of cosines :P

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0so figure out that a = 28.5

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1No, no, you already have the given value of a, so just use law of sines to find the angle.

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1Now you know a, b, c, and B. Now all you need to do is find A and C.

pooja195
 3 years ago
Best ResponseYou've already chosen the best response.0b^2 = a^2 + c^2  2accosB b = 27.5

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1Wait, you're right, angle C is close to 25.5º. My bad. Now find the other angle.

TNNG
 3 years ago
Best ResponseYou've already chosen the best response.0so i had it right the first time

geerky42
 3 years ago
Best ResponseYou've already chosen the best response.1You have to do math, though. You can't just guess. Just saying.
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