Sin 50degree/cos 40degree+cosec 40degree/sec50 degree - 4 cos 50degree x cosec 40degree = -2. prove
Note:i hav written degree in words .it is nothing but the small o which we use.
and solve it by trigonomertric identities
solve it today itself.it would be of great help to me.tmr is max xam.
hope u wil reply within 10-15 mins.