1. How do you prove sec2thetasin2theta = sec2theta - 1
2. how do you prove secant squared theta sine squared theta = cosecant squared theta - 1?
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1. How do you prove sec2thetasin2theta = sec2theta - 1
2. how do you prove secant squared theta sine squared theta = cosecant squared theta - 1?
1.
This is not a valid identity.
2.
Not valid either.
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