(cosec A - sin A) (secA - cosA) = 1/ tanA - cotA
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Step-by-step explanation:
Give(cosA−sinA)(secA−CosA)=tanA+cotA1
L.H.S.(coscA sinA)(secA-cosA)
⇒L.H.S=(sinA1−sinA)(cosA1−cosA)
⇒L.H.S=(sinA1−sin2A)(cosA1−cos2A)
⇒L.H.S=sina.cosAcos2A.sin2A[∵sin2A+cos2A−1cos2A−1−sin2Asin2A=1−cos2A]
⇒L.H.S=1sinA.cosA
⇒L.H.S=sin2A+cos2AsinA.cosA
⇒L.H.S=
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