Question

Why we take right angle as $\tt{\orange{π/2}}$​

Answer 1

$\underline{ \fcolorbox{green}{pink}{ \huge{Solution :)}}}$

Radian is a unit of measurement of angles equal to about 57.3°

A right angle is an angle of exactly 90° (degrees)

We know that , the relationship between degree measure and radian measure is given by

$\large \sf \fbox{Radian \: measure = \frac{\pi}{180} \times degree \: measure }$

So ,

Radian measure = (π/180) × 90

Radian measure = π/2

Therefore , 90° degrees = π/2 radian

Remember :-

30° degrees = π/6 radian

45° degrees = π/4 radian

60° degrees = π/3 radian

90° degrees = π/2 radian

180° degrees = π radian

360° degrees = 2π radian

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