Question

sin 42 sec48 +cos 42 cosec 48

Answer 1

sin42sec48+cos42cosec48
=sin42sec(90-42)+cos42cosec(90-42)
=sin42cosec42+cos42sec42
=1+1
=2

Answer 2

sin42.sec48+cos42.cosec48

Cos(90-42).Sec48+sin(90-42).cosec48

Cos48.sec48+sin48.cosec48

1÷sec48.Sec48+1÷cosec48.cosec48

1+1=2 ans