1.If cosec + cot = x, find the value of cosec 8-coto
2.Prove that 1/sec A-tan A-1/cosA=1/cos A-1/sec A+tan A
3.If 7sinA + 3cos-A = 4, show that tan A =1/v3
4. If sino = x and sec = y then find the value of cot e.
5. Solve the equation for 8: cos20/cot? - cos? 0=3
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