Question

In isoceles triangle ABC b=90 then find 2 sinacosa

Answer 1

Hey mate ...

The sum of all angles are 180°

Given that < B is 90°

therefore, <A+ <C = 180°-90° = 90°

as the pair of angles opposit to equal sides of isosceles triangle are equal..

<B = 90/2 = 45° ...

<C = 45°

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