1.

Find the valeu of tan20° +tan 25°/1 - tan 25° × tan 20°​

Answer»

As it is looking like

\sf tan (A + B) = \dfrac{tan A + tan B }{1 - tan A × tan B}

So by COMPARING given EQUATION with the above

We get,

A = 20°

B = 25°

So the Answer would be

tan ( 20° + 25 )

tan 45° = 1 ANS...



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