Images SIN2A COS2A

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Sin2a cos2a. 1-Sin2a/1-cos2a. 1 Sin2a 1 cos2a 1/tg2a. Cos 1/2.
1-Sin2a/1-cos2a. 1 Sin2a 1 cos2a 1/tg2a. Cos 1/2.

See also