Prove that (sin^(2)B-tan^(2)B)/(1-sec^(2)B)=sin^(2)B are identities

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Q: 53х dx (53x + 1)2 A) 3 V5x + 1 + C B) – 3 V5x + 1 + C In5 3 C) 3ln5 (V5x + 1) + C D) V5x + 1 + C 3…

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A: Please refer to the image below

Q: %3D sinset!

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Q: (sinx/ 1-cosx)=cscx + cotx   verify the identity

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