sederhanakanlah a.tan ( 90˙—x): sec(90˙—x) b.cos (90˙—x):cos(90˙+x)
Matematika
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Pertanyaan
sederhanakanlah a.tan ( 90˙—x): sec(90˙—x) b.cos (90˙—x):cos(90˙+x)
1 Jawaban
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1. Jawaban renitaa2929
a. tan (90-x) : sec (90-x) = cot x/cosec x = cot x / 1/sinx = cot x . sinx
b. cos (90-x) : cos(90+x) = sin x / - sin x = -1