Page 48 - modul trigonometri bilingual
P. 48
Competency Test
3
1. Prove the following trigonometric identity.
2
a. (sin + cos ) = 1 + 2 sin cos
b. sin (cot + tan ) = sec
2. Prove the following trigonometric identity.
2
1 + tan
2
= tan
2
1 + cot
3. Prove the following trigonometric identity.
2
1 + tan
= 1
2
2
tan (1 + cot )
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