Question

In triangle ABC , A=32 degrees, c=8 and b=7. find C
A.



110.7°


B.



20.7°


C.



30.4°


D.



120.4°

Answer 1

solve for side a using the cosine law: \(\large a^2=b^2+c^2-2\cdot b\cdot c\cdot cosA \)

after getting side a, use that in the sine law to solve for angle C: \(\large \frac{sinA}{a}=\frac{sinC}{c} \)