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Mathematics, 27.03.2020 04:54 cherry12345627

Use identities to find values of the sine and cosine functions of the function for the angle measurea. theta, given that cos2theta=28/53 and 0theta < theta < 90degreesb. 2theta, given sin theta= - sqrt 7 over 5 and cos theta > 0c. 2x, given tan x=2 and cos x<0

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