Prove that ∫ cot u du = ln∣sin u∣ + C.

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A: Given :- ∠QPR≅∠STR and PR ≅TRProve :- ∆PQR≅∆TSR

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Q: | sec? u du = tan u + C

A: Topic- integration

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Q: SR ⊥ RT, TU ⊥ US , ∠STR ≅ ∠TS PROVE: ∆TRS ≅ ∆SUT

A: Since SR⊥RT So, ∠TRS=90° Also as TU⊥US So, ∠SUT=90° ∠STR≅∠TSU (given)

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A: To prove:               The corollary of the Triangle proportionality theorem.   Triangle…

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