trig

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cos(+pi/2-theta)/csctheta+cos^2theta

  • trig -

    cos(π/2 - Ø) = sinØ , complementary angle property

    then
    cos(+pi/2-theta)/csctheta+cos^2theta
    = cos(π/2-Ø) * 1/cscØ + cos^2 Ø
    = sinØ ( sinØ) + cos^2 Ø
    = sin^2 Ø + cos^2 Ø
    = 1

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