If cosx=sqrt{3}/2 and −pi/2<=x<=0 then the exact value of x, in...

1-cosx/1+cosx=(cotx-cscx)^2

square root of (1-cosx/1+cosx) = cscx - cotx prove the identity

2sinx-cosx=3/sqrt. of 2

verify for sqrt(1-cosx)= sin/sqrt(1+cosx). I multiplied the right side by sqrt(1-cosx) and got s...

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Prove that 1+cosx+sinx/1-cosx+sinx=cotx

If cosx=sqrt(1/2 + 1/(2sqrt(2))) and sinx=-sqrt(1/2 - 1/(2sqrt(2))) with 0 <= x < 2pi , it follows t...

Differentiate In(cosx+sinx/cosx-sinx)

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