Grade 10Trigonometry
Prove that cosec53.cosec37.sec48.sec42 is equal to one ?
Prove that cosec53.cosec37.sec48.sec42 is equal to one ?
1 Answer
Aditya Gupta
sec48=1/cos48=1/sin42
similarly cosec53=1/sin53=1/cos37
so, cosec53.cosec37.sec48.sec42=1/[cos37sin37cos42sin42]
=4/sin74sin84, which is not equal to 1. so question is wrong
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