- #1

ibysaiyan

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## Homework Statement

this time i have posted two questions on a post, instead of me creating posts all over the forum.

a)cot^2x + cosec^2x = 7

b) (2 cosec^2)2x + cot2x =3

find out the solutions.

## Homework Equations

cosec^2 = 1+ cot^2

## The Attempt at a Solution

a) cot^2x + cosec^2x = 7

cosec^2-1 + cosec^2 = 7

2cosec^2x = 8

now i thought of solving it by the difference of squares?

couldn't solve it =/

b) totally cluesless as this one has 2 after function cot i.e cot2x =/