Asked by CJ

Find the exact value of cosθ if sinθ=-2/3, and θis in standard position with its terminal side in Quadrant IV.
Answered by Damon
cos is + in quadrant IV
2^2+x^2 = 3^2
x^2 = 5
x = sqrt(5)
so
sqrt(5)/3
Answered by CJ
Thankyouu
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