Question

cos (2 × 30) = 1 − ² 30°/1 + ² 30°​

Answer 1

Answer:

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Answer 2

The value of cos^2(30) is 3/4.

Solution- Since the value of cos(30) from the trigonometric values table is ✓3/2.

So if Cos(30)= ✓3/2

Then, cos^2(30)= (✓3/2)^2 = 3/4

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