August 2018 2 46 Report
Buktikan setiap identitas trigonometri berikut
a. 3 + 5 sin² α = 8 - 5 cos² α
b. sec² α - sin² α sec² α = 1
c. tan² α cos² α + cot² α sin² α = 1
d. (sin α + cos α)² = 1 + 2 sin α cos α
e. 1 - sin α = cos α
cos α 1 + sin α

tolong di bantuh ya
soalnya gak tauh ni
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