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CBSE Class 10 Answered

(1+cotA + tanA)(sinA-cosA)=sinAtanA - cotAcosA
Asked by | 29 Aug, 2012, 09:03: PM
answered-by-expert Expert Answer
LHS = 
(1 + cotA + tanA)(sinA - cosA)
= sinA + sinAcotA +sinAtanA - cosA - cosAcotA -cosAtanA
= sinA + cosA + sinAtanA -cosA cotA - cosA -sinA
= sinAtanA - cotAcosA
= RHS
Answered by | 29 Aug, 2012, 10:47: PM

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