Math, asked by 10584302, 2 months ago

(cosec A - sin A) (secA - cosA) = 1/ tanA - cotA​

Answers

Answered by anbukingky
0

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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