SOLUTION: if sin^-1, x=2 pi/5 find the value of cos^-1

SOLUTION: if sin^-1, x=2 pi/5 find the value of cos^-1

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Question 843891: if sin^-1, x=2 pi/5 find the value of cos^-1
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
if sin^-1, x=2 pi/5 find the value of cos^-1
sin^-1(x)=2π/5
cos^1(x)=π/2-2π/5=π/10
check:
sin(2π/5)≈0.951
cos(π/10)=0.951
note: sin(x)=cos(π/2-x)
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