1.

sin2A45. Prove that COs9-sine[S. S. 651cose +sine Sec20 - tan2A6. Prove that tan ( +θ)-tan (4-0):)tan297. If cosea8. Prove that cosag + sinagcos2β-cos29 + sin2β cos2θ9, Prove that l + tanBtan29= sec2θShow that cos28-( a2 +-2H. S10. Prove that 1 + sin2A +COS2A

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5th

7 and 8 questions



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