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Question

If sin(B+C)=32 and sin A=12, find B+C and A.

A
B+C=60 and A=30
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B
B+C=30 and A=30
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C
B+C=45 and A=60
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D
B+C=60 and A=60
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Solution

The correct option is A B+C=60 and A=30
Trigonometric angles for some specific sine acute angles are given below,
θ030456090Sinθ01212321

From the above table we can see that B+C=60 and A=30

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