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3 years ago

In triangle ABC angle A = 45, a = 9, c = 11. Find angle C to the nearest tenth.

Mathematics

2 answers:

ycow [4]3 years ago

8 0

I think it is B......

kykrilka [37]3 years ago

8 0

Using the Law of Sines
a / sine A = c / sine C
9 / 0.70711 = 11 / sine C
sine C = 11 * 0.70711 / 9
sine C = 0.8642455556 
Angle C = arc sine ( 0.8642455556 )
arc sine ( 0.8642455556 ) = 59.796

answer is C

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