Question: Verify the trigonometric identity cos (2x) = 1 2 sin 2 (x) for x = 0.50000 rad. Use as many digits as your calculator

Verify the trigonometric identity

cos (2x) = 1 − 2 sin2 (x)

for x = 0.50000 rad. Use as many digits as your calculator will display and check for round-off error.

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