Q33 of 186 Page 345

Find the value of sin 48° sec 42° + cos 48° cosec 42°.

Consider sin 48° sec 42° + cos 48° cosec 42°


= sin 48° sec (90° – 48°) + cos 48° cosec (90° – 48°)


= sin 48° cosec 48° + cos 48° sec 48°


= 1 + 1


= 2


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