04:24

Prove : 2sec^2x-sec^4x-2cosec^2x+cosec^4x=cot^4x-tan^4x.

02:55

Prove that :(sinx+cosecx)^2+(cosx+secx)^2=7+tan^2x+cot^2x

02:26

Prove (sin 2x) / (1 + cos2x) = tan x?

04:41

Prove : sin^8x-cos^8x=(sin^2x-cos^2x)(1-2sin^2xcos^2x)

02:58

Prove : cot^4 x+ cot^2x = cosec^4 x - cosec^2 x

01:52

If Sec θ + Tan θ= 7, then evaluate Sec θ - Tan θ

01:56

If Cosec θ= 54, find the value of cot θ

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