Prove that cotA-cosA/cotA+cosA = cosecA-1/cosecA+1

1.	Prove that cotA-cosA/cotA+cosA = cosecA-1/cosecA+1
Answer» cotA -cosA)/(cotA + cosA) = (cosecA-1)/(cosecA+1) (cotA -cosA)/(cotA + cosA)((cosA/sinA)-cosA)/((cosA/sinA)-cosA) cotA=cosA/sinAtaking cosA common from numretor nd denominatr nd cancelling it we get ((1/sinA)-1)/((1/sinA)+1) since 1/sinA=cosecA therfore (cosecA-1)/(cosecA+1)

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