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Posted by on Friday, June 28, 2013 at 11:35pm.

Sina+cosa=root over cosA

  • math - , Saturday, June 29, 2013 at 1:19am

    Hint

    (sinA +cosA) = sqrt(cosA)

    sinA +cosA)^2 = (sqrt(cosA)^2

    (sinA + cosA)(sinA+cosA) = cosA

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