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13. Prove that cosecθ−cotθ1−sinθ1=sinθ1+(cosecθ+cotθ)1 14. Prove that secx−tanx1−cosx1=cosx1−(secx+tanx)1 15. (c
Posted: Thu Jul 14, 2022 3:57 pm
by answerhappygod
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13. Prove that cosecθ−cotθ1−sinθ1=sinθ1+(cosecθ+cotθ)1 14. Prove that secx−tanx1−cosx1=cosx1−(secx+tanx)1 15. (cosecθ−cotθ)2=1+cosθ1−cosθ, prove it. 16. Prove that 1+sinθ1−sinθ=(secθ−tanθ)2 17. tanθ−secθ+1secθ+tanθ−1=1−sinθcosθ. prove it. 18. To.prove sinθ+cosθ−1sinθ−cosθ+1=secθ−tanθ1 19. Prove that cotθ−cosecθ+1cotθ+cosecθ−1=sinθ1+cosθ 20. Prove that 1+sinθ1−sinθ=secθ−tanθ 21. Prove that 1−sinθ1+sinθ+1+sinθ1−sinθ=2secθ 22. Prove that tan2A−tan2B=cos2A⋅cos2Bsin2A−sin2B=cos2A⋅cos2Bcos2B−cos2A 23. Prove that secθ+1secθ−1+tsecθ−1secθ+1=2cosecθ