Question

Choose the correct option and justify your choice

sin2A= 2sinA is true when A=

(i) 0°
(ii) 30°
(iii) 45°
(iv) 60°

​

Answer 1

Answer:

[iv] please follow me 4 4 4

Answer 2

Answer:

(I) 0°

Step-by-step explanation:

sin2A = sin2A

2sinA(cosA-1)=0

2sinA =0 or cosA -1 =0

sinA =0 or cosA =1

sinA =sin 0 or cosA = cos 0

then,

A = 0