Question

I just need someone to check this
Solve the triangle.

A = 52°, b = 10, c = 7

Answer 1

for a i got 12

Answer 2

for C i got 43.9

Answer 3

and for B i got 84.1

Answer 4

@iPwnBunnies

Answer 5

surely appreciate your having done this much work before asking for help. Congrats.

Let's try applying the Law of Cosines to find the length of side a.

The Law states:\[a^2=b^2+c^2-2bc*\cos A\]

Answer 6

Mind calculating ' -2bc*cos A '? Show your work. The reason I ask you to do this is that I get a different result for the length of side a.

Answer 7

7.9!! thats what i got first for a

Answer 8

-( b )( c )cos ( A ) = -(10)(7)cos (52 deg) = -70*cos (52 deg) = ??

Answer 9

Once you have that value, add 10^2 and 7^2 to it. Your result?

Answer 10

7.9