" (5) "cot A-cot2A=cosec2A" ( "sqrt(2)+cos theta+7)

cosec A -2 cot 2A cos A=

Consider the following: 1. sqrt((1-cos theta)/(1+cos theta)) = "cosec" theta -cot theta 2. sqrt((1+cos theta)/(1-cos theta))="cosec" theta +cot theta Which of the above is/are identity/ identities?

cosec A- 2cot 2A cos A=

If cot theta + cosec theta = sqrt(3) then theta =

Prove that cotA-cosec2A=cot2A

The value of sqrt((1+cos theta)/(1-cos theta)) is (a) cot theta-cos ec theta(b)cos ec theta+cot theta(c)cos ec^(2)theta+cot^(2)theta(d)(cot theta+cos ec theta)^(2)

Prove that: ("cosec" theta + cot theta)/("cosec" theta - cot theta) = ("cosec" theta + cot theta )^(2) = 1 + 2 cot^(2) theta + 2 "cosec" theta cot theta .

(cos 3 theta)/(cos^(3) theta)+(sin 3 theta)/(sin^(3) theta)= A) 3 csc 2 theta * cos 2 theta B) 3 csc 2 theta * cot 2 theta C) 12 cosec 2 theta * cot 2 theta D)none of these

The solution set of cot theta = - sqrt(3), cosec theta = 2 is

Prove each of the following identities : (i) (1+ cos theta)(1- cos theta)(1+ cot^(2) theta)=1 (ii) "cosec" theta (1+ cos theta)("cosec" theta - cot theta)=1