If `sec^4theta+sec^2theta=10+tan^4theta+tan^2theta", then "sin^2theta= – InterviewSolution

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1.	If `sec^4theta+sec^2theta=10+tan^4theta+tan^2theta", then "sin^2theta=`A. `2/3`B. `3/4`C. `4/5`D. `5/6`
Answer» Correct Answer - C `sec^4theta+sec^2theta=10+tan^4theta+tan^2theta` `rArrsec^4theta-tan^4theta+sec^4theta-tan^2theta=10` `rArr sec^2theta+tan^2theta+1=10` `rArr2sec^2theta=10` `rArrcos^2theta=1/5` `rArr sin^2theta=4/5`

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