`Cosec(2Cot^-1(5) + Cos^-1(4/5))` is equal to

"cosec"[2 cot^(-1)(5) + cos^(-1)(4/5)] is equal to

Range of the function f(x)=cos^(-1)x+2cot^(-1)x+3cosec^(-1)x is equal to

If cosec^(-1)x=2cot^(-1)7+cos^(-1)((3)/(5)) , then x=

The expression cosec^(2)A cot^(2)A-sec^(2)A tan^(2)A-(cot^(2)A-tan^(2)A)(sec^(2)A cosec^(2)A-1) is equal to

sec^(2)(tan^(01)2)+csc^(2)(cot^(-1)3) is equal to 5 (b) 13 (c) 15 (d) 6

If N=(1-cos4beta)/(sec^2 2beta-1)+(1+cos4beta)/(cosec^2 2beta-1) then (log)_(0. 25)N is equal to: -2 (2) -1 (3) -1/2 (4) 1/2 (5) 0

cot^(-1)3+cosec^(-1)sqrt(5)=