Question
Mathematics Question on Trigonometric Ratios
If sinθ=21 and θ is acute, then the value of sin 2θ is
A
1
B
23
C
21
D
−23
Answer
23
Explanation
Solution
The correct option is (B): 23
If sinθ=21 and θ is acute, then the value of sin 2θ is
1
23
21
−23
23
The correct option is (B): 23