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Standard Values of Trigonometric Ratios

Choose the co...

Question

Choose the correct option and justify

Sin 2A = 2 Sin A is true when A =

0 degree

30 degree

45 degree

60 degree

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Solution

0 degree is the correct answer

because when A = 0

sin (2x0) = sin 0 = 0

2 sin 0 = 2 x 0 = 0

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