October 2018 1 100 Report
A.tan A + cot A = tan^2 A + 1
--- ---
tan A - cot A = tan^2 A - 1
b.cos A 1 +sin A
--- + --- = 2sec A
1+sin A cos A
Buktikan identitas troigonometri diatas!

Ket. : --- = per
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