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In a triangleABC, right-angled at B, if ...

In a `triangleABC`, right-angled at B, if AB : AC = 1:2, then find the value of
`(2tanA)/(1+tan^2A)`.

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AGRAWAL PUBLICATION-(2019) QUESTION PAPER-EXAMPLE
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  5. Prove that sqrt 3 is an irrational number.

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  9. If tan(A +B) = 1 and tan(A - B) = 1/ sqrt 3, 0^@ < A + B < 90^@, A>B, ...

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