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Answer:
The value of 1-Cos2A is equal to Sin 2A.
This has been derived from the trigonometric identity:
=>Sin2A+ Cos2A =1
=>Sin2A = 1- Cos2A
Hence,
1- Cos2A = Sin2A
The trigonometric identities are certain equations that include the given trigonometric functions and are used for solving the equations which contain variables that are related to trigonometry. There are certain trigonometric identities that take the side length and angle of the triangle into account.
All of these trigonometric identities are derived from the six trigonometric ratios, which are turned as sin, cosine, tangent, cosecant, secant and cotangent. All of the trigonometric identities are derived and related from the basic six trigonometric ratios. Using these trigonometric identities, complex trigonometric calculations can be done.
