sin50/cos 40 +cosec 40/ sec50 -4cos52 cosec 38
cos(90-50)/cos 40 +sec(90-40)/sec 50 -4 cos(90-38) cosec 38 since cos (90-x) =sinx , sec(90-x)=cosecx
cos40/cos40 +sec 50/sec50 -4 cos 50 sec50
1+1-4 since sin x cosec x=1 -2 ans
Find the value of sin 50ocos 40o+cosec 40osec 50o−4 cos 50o cosec 40o.