# Question - Values of the Trigonometric Ratios of 30, 45 and 60

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ConceptValues of the Trigonometric Ratios of 30, 45 and 60

#### Question

If x = 30°, verify that

(i) \tan 2x=\frac{2\tan x}{1-\tan ^{2}x

(ii) \sin x=\sqrt{\frac{1-\cos 2x}{2}}

#### Solution

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