evaluate- cosec 25 cot 65 + cot 25 cosec 65
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Given : cosec 25 cot 65 + cot 25 cosec 65
To Find : evaluate
Solution:
cosec 25 cot 65 + cot 25 cosec 65
cosec x = 1/Sinx
Cotx = cosx/sinx
= cos 65/ Sin65Sin25 + cos25/ Sin 25 Sin65
cos 65 = Sin25
cos25 = Sin65
= 1/Sin65 + 1/Sin 25
= Cosec65 + cosec 25
cosec 25 cot 65 + cot 25 cosec 65 = Cosec65 + cosec 25
Note : Read all angles in degrees.
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