Cos 50 .cosec 40 + cos 55.cosec 35
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cos 50. codec 40 + cos 55 . cosec 35
= cos (90-40). cosec 40 + cos (90-35) .cosec 35
= sin 40 . 1/sin 40 +sin35 . 1/sin35
= 1+1
= 2
= cos (90-40). cosec 40 + cos (90-35) .cosec 35
= sin 40 . 1/sin 40 +sin35 . 1/sin35
= 1+1
= 2
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