(xi)cos^(-1)((1)/(2))+2sin^(2)((1)/(2))

Write the principal value of cos^(-1)((1)/(2))-2sin^(-2)(-(1)/(2))

For the principal values,evaluate each of the following :(cos^(-1)1)/(2)+2(sin^(-1)1)/(2) (ii) cos^(-1)((1)/(2))-2sin^(-1)(-(1)/(2))

cos^(-1)((-1)/(2))-2sin^(-1)((1)/(2))+3cos^(-1)((-1)/(sqrt(2)))-4tan^(-1)(-1) equals to

cos^(-1)((1)/2)+2sin ^(-1)((1)/(2))=...

cos ^(-1) (1)/(2)+2 sin ^(-1) (1)/(2)=

Evaluate "cos"^(-1)(1/(2))+2"sin"^(-1)(1/(2)) .

cos A=cos^(2)((A)/(2))-sin^(2)((A)/(2))=1-2sin^(2)((A)/(2))=2cos^(2)((A)/(2))-1

For the principal values, evaluate each of the following : (i) cos^(-1) (1/2)+2sin^(-1) (1/2) (ii) cos^(-1)(1/2)-2sin^(-1)(-1/2)

cos [cos^(-1)(-1/2)-sin^(-1)(1/2)]

sin(sin^(-1)(1)/(2)+cos^(-1)(1)/(2))