Question

Question 1 Find the radian measures corresponding to the following degree measures:

(i) 25°

(ii) – 47° 30'

(iii) 240°

(iv) 520°

Class X1 - Maths -Trigonometric Functions Page 54

Answer 1

Concept :- you should use the relation. C/π = D/180°
Where C = angle in radian
D = angle in degree.

(i) 25°
D = 25°
C = ?
C/π = 25°/180°
C = 25π/180 = 5π/36 radian

(ii) D = -47°30'= -(47+30/60)[we know, 1° = 60']
= -95/2°
C = ?
C = -95π/360 = -19π/72 radian

(iii) D = 240°
C = ?
C = 240π/360 = 4π/3 radian

(iv) D = 520°
C = ?
C = 520π/180 = 26π/9 radian

Answer 2

Answer:

Hey mate please refer to the attachment for the answer.