`cos[(pi)/(3)+cos^(-1)(-(1)/(2))]`

Evaluate cos [(pi)/(6) + cos^(-1) (-(sqrt(3))/(2))]

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

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

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

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

Evaluate the following: sin^(-1)(sin(pi)/(4)) (ii) cos^(-1)(cos2(pi)/(3))tan^(-1)(tan(pi)/(3))

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

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

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