Images SIN2A COS2A

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Sin2a cos2a. 1-Cos2a+sin2a/1+cos2a+sin2a. Sin2a/1+cos2a=TGA. 1 - (Sin(a) - (cos(a))2 1 - 2 cos2(a). Доказать тождество cos2a-sin2a 1-2sin2a.
1-Cos2a+sin2a/1+cos2a+sin2a. Sin2a/1+cos2a=TGA. 1 - (Sin(a) - (cos(a))2 1 - 2 cos2(a). Доказать тождество cos2a-sin2a 1-2sin2a.

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