Inverse Trigonometric FunctionHard
Question
cos-1 
is equal to -
is equal to -Options
A.− 
B.
C.− 
D.
More Inverse Trigonometric Function Questions
If tan-1 , x ∈ N, then the maximum value of x is -...If x = 2cos-1 + sin-1 + tan-1 (√3) and y = cos then which of the following statements holds good ?...tan-1 - tan-1 is -...If x + 1/x = 2 the principal value of sin-1x is -...The value of tan-1 + tan-1 (cot A) + tan-1 (cot3 A) for 0 < A < (π / 4) is -...