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If 0^(@)lethetale90^(@) , then solve the...

If `0^(@)lethetale90^(@)` , then solve the following equations :
(i) `(costheta)/(1-sintheta)+(costheta)/(1+sintheta)=4`
(ii) `(cos^(2)theta-3costheta+2)/(sin^(2)theta)=1`
(iii) `(costheta)/("cosec"theta+1)+(costheta)/("cosec"theta-1)=2`

Text Solution

Verified by Experts

The correct Answer is:
(i)`60^(@)` (ii) `60^(@)` (iii)`45^(@)`
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