Question

4.. Convert into degree measure.
(i) 2.5 radian
(ii) (4π/5)^c​

Answer 1

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$\bold\red{\underline{Solution:-}}$

Formula used for

converting radian to degree

= rad × 180/π

Given , 2.5 radian

Now,

Converting to degree

= 2.5 × 180/ π

= 143.31°

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Answer 2

ii) (4π/5)^c

Convert into degree measure.

Divide the angle in radians by π, then multiply the term by 180° using the formula deg = ([4π/5] / π) × 180°. Thus, you get (rounded to two decimal places

4π/5 rad in ° = 144°