cot A- cos A/ cot A+ cos A = cosec A- 1 /cosec A + 1
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Answered by
1
Answer: cotA-cosA/cotA+cosA=cosecA-1/cosecA+1
L.H.S=(COSA/SINA)-COSA/(COSA/SINA)+COSA
=COSACOSECA-COSA/COSACOSECA+COSA................COSECA=1/SINA
=COSA(COSECA-1)/COSA(COSECA+1)................................COSA WILL
GET CANCELLLED
=COSECA-1/COSECA+1
R.H.S=COSECA-1/COSECA+1
L.H.S=R.H.S
Answered by
2
LHS= cot A-cosA / cot A + cosA
=(cosA/sinA - cosA) /(cosA/sinA+cosA)
=cosA(1/sinA-1)/cosA(1/sinA +1)
= (1/sinA-1)/(1/sinA+1)
=(cosecA-1)/(cosec+1)
=RHS
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