Question

Tentukan nilai dari:
a.sec 9/3π b.tan 5/3π c.cos 5/6π d.cot(-3/4π) e.csc(-7/6π) f.sin -2/3π
pls bantuin ya :))

Answer 1

a.sec 9/3π  = Sec 3π = Sec π = -1
b.tan 5/3π  = √3
c.cos 5/6π  = 1/2 akar 3
d. cot(-3/4π) = - cot(3/4π) = 1
 e.csc(-7/6π) = csc(7/6π) = 2
 f.sin -2/3π  =  sin 2/3π = 1/2 akar 3