value of the indicated trigonometric

label Mathematics
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please fine cosθ=2/5, tan θ<0    

find sin θ.

Dec 31st, 2014

cosθ = 2/5

Now

cosθ = 0.4

θ = cos^-1(0.4)

θ = 66.42 deg

Now 

sinθ

= sin(66.42 deg)

= 0.92


Dec 31st, 2014

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Dec 31st, 2014
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Dec 31st, 2014
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