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If cos A =2/5, find the value of 4 + 4 t...

If `cos A =2/5,` find the value of `4 + 4 tan^2 A.`

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  1. Write the value of cot^2theta-1/(sin^2theta) .

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  2. If cos A =2/5, find the value of 4 + 4 tan^2 A.

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  3. If k + 1 = (sec^(2)theta)(1 + sin theta) (1 - sin theta), then find th...

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