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Trig

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Column 1 Column 2

(sin theta + cos theta)sq
1 + 2sin theta cos theta

Question : how do you get column 1 to be the same as column 2?? using the trig identities

  • Trig -

    (sin t + cos t)^2 = 1 + 2 sin t cos t ???

    sin^2T + 2 sin t cos t + cos^2 t =

    but sin^2 t + cos^2 t = 1 identity
    so

    1 + 2 sin t cos T

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