Question #2a998

1 Answer
Nghi N.
Feb 10, 2017

sin x = 2/3
cos^2 x = 1 - sin^2 x = 1 - 4/9 = 5/9 -->
cos x = - sqrt5/3 (because cos x < 0)
tan x = sin/(cos) = (2/3)(-3/sqrt5) = - 2/sqrt5 = - (2sqrt5)/5
cot x = 1/(tan) = - sqrt5/2
sec x = 1/(cos) = - 3/sqrt5 = - (3sqrt5)/5
csc x = 1/(sin) = 3/2

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