Question
Mathematics Question on Trigonometric Ratios of Some Specific Angles
Choose the correct option and justify your choice: sin 2A = 2 sin A is true when A =
A
0°
B
30°
C
45°
D
60°
Answer
0°
Explanation
Solution
sin 2A = 2 sin A
Out of the given alternatives, only A = 0° is correct.
As, sin 2A = sin 0° = 0
2 sin A = 2sin 0° = 2(0) = 0
Hence, (A) is correct.