defence exam INET Mock Test Mathematics Trigonometry Multiple and Sub-multiple Angles

यदि sin θ = 3 / 5 और 0 < θ < π / 2 है। तो sin 3θ का मान ज्ञात कीजिए। 

1
113 / 125
2
117 / 125
3
119 / 125
4
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