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docker41 [41]
4 years ago
14

Simplify the trigonometric expression.

Mathematics
1 answer:
Mila [183]4 years ago
3 0
Recall that sin²Ф+cos²Ф=1, 
so cos²Ф=1-sin²Ф=(1+sinФ)(1-sinФ)
the (1-sinФ) in the numerator cancel with the (1-sinФ) in the denominator, the result is 1+sinФ
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