skybunnygirl
tant + 2cost csct=sect csct + cott



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RadEn
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let's do it from left side

RadEn
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setting tan t = sint /cost
and csc t = 1/sint

skybunnygirl
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ok and I left 2 cost as it is

skybunnygirl
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than i multiplied 2 cost and 1/sint

skybunnygirl
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sint/cost + 2cost/sint

RadEn
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then simplify :
dw:1361740837491:dw

skybunnygirl
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ok got it, i missed the next to last step and it confused me.

RadEn
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dw:1361741336776:dw

RadEn
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LHS = RHS

skybunnygirl
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perfect thanks for your help, very good explanation

RadEn
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you're welcome :)