`cos^(-1)cos((3 pi)/(2))=cos^(-1)(0)=(pi)/(2)`

cos^(-1)cos((2 pi)/(3))

cos^(-1)(cos((2 pi)/(3)))

cos^(-1)(-cos(2 pi)/(3))

The value of cos^(-1)(cos((pi)/(2)))+cos^(-1)(sin((2pi)/(3))) is

cos^(-1)((3)/(5))+cos^(-1)((4)/(5))=(pi)/(2)

The value of cos^(-1)(cot((pi)/(2)))+cos^(-1)(sin((2pi)/(3))) is

Write the principal value of cos^(-1)(cos(2 pi)/(3))+sin^(-1)(sin(2 pi)/(3))

What is the principal value of cos^(-1)cos((2 pi)/(3))+sin^(-1)sin((2 pi)/(3))?

The value of cos[(1)/(2)cos^(-1)cos((14 pi)/(5))]is(a)cos((2 pi)/(5))(b)cos(-(7 pi)/(5))(c)sin((pi)/(10))(d)-cos((3 pi)/(5))

The value of cos^(2)((pi)/(20))+cos^(2)((2 pi)/(20))+cos^(2)((3 pi)/(4))+......+cos^(2)((9 pi)/(20)) is