evaluate `cos^(-1)cos10`

The value of cos^(-1)(cos10) is

Find the value of : cos^(-1)(cos 13)

Find the value of : cos^(-1)(cos 4)

Evaluate cos(cos^(-1)0.72)

Find the principal value of [cos^(-1) cos ( - 680^@)]

Find the value of sin^(-1)(cos(sin^(-1)x))+cos^(-1)(sin(cos^(-1)x))

Find the value of sin^(-1)(cos(sin^(-1)x))+cos^(-1)(sin(cos^(-1)x))

The value of sin^(-1)sin17+cos^(-1)cos10 is equal to

Evaluate ((cos15^(@)-sin15^(@)+1)/(cos15^(@)+sin15^(@)+1))((1+sin15^(@))/(cos15^(@)))

The value of cot^(-1)(cot(-10))+cos^(-1)(cos10) is given by a +bpi , a, b being rational numbers, then (b-a) equals……