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Prove that (cos(90^0+theta)sec(-theta)"t...

Prove that `(cos(90^0+theta)sec(-theta)"tan"(180^0-theta))/(sec(360^0-theta)sin(180^0+theta)cot(90^0-theta))=-1`

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`L.H.S. = (cos(90^@+theta)sec(-theta)tan(180^@-theta))/(sec(360^@-theta)sin(180^@+theta)cot(90^@-theta))`
`= ((-sintheta)sectheta(-tantheta))/(sectheta(-sintheta)tantheta)`
`=-1 = R.H.S.`
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