AMATHS!~ HELP PROVE IDENTITY cosec x + cot x = cot(x/2)
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> > AMATHS!~ HELP PROVE IDENTITY cosec x + cot x = cot(x/2)
AMATHS!~ HELP PROVE IDENTITY cosec x + cot x = cot(x/2)
[From: ]
[author: ]
[Date: 12-03-16]
[Hit: ]
......
Prove that cosec x + cot x = cot(x/2)
-
LHS=1/sinx +cosx/sinx
=(1+cosx)/sinx
= 2cos^2(x/2)/2sin(x/2)cos(x/2)
=cos(x/2)/sin(x/2)
= cot(x/2)
1
keywords: IDENTITY,HELP,PROVE,cot,AMATHS,cosec,AMATHS!~ HELP PROVE IDENTITY cosec x + cot x = cot(x/2)
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