Question

In triangle ABC, a = 8, b = 6, and C = 60°. Find the measure of A.

16°
46°
74°
106°

Answer 1

@jim_thompson5910 can you help me please

Answer 2

step 1) use the law of cosines to find the length value of c

step 2) use law of sines to find angle A

Answer 3

what would i put for SIN A, SIN B, and SIN C for step 1 @jim_thompson5910

Answer 4

c^2 = a^2 + b^2 - 2*a*b*cos(C)

c^2 = 8^2 + 6^2 - 2*8*6*cos(60)

c^2 = 8^2 + 6^2 - 2*8*6*0.5

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c = ???

Answer 5

52?

Answer 6

@jim_thompson5910

Answer 7

c^2 = 52

so c itself is ???

Answer 8

7.21?? @jim_thompson5910

Answer 9

we'll leave it as \[\Large \sqrt{52}\]