Question

Simplify the expression: cotxsinx-sin(pi/2 -x)+cos x

so far i know that sin(pi/2 -x) is cos x

Answer 1

cotx=cosx/sinx
cotx*sinx=(cosx/sinx)*sinx=cosx
and sin(pi/2 -x)=cosx
can you continue??

Answer 2

-sin(pi/2 -x)=-cosx substitute that in equation !!!

Answer 3

@AravindG i already said that, dude :)

Answer 4

@marsss ofcourse you did ..i jst told to substitute it in there ,besides i always hav right to post my reply !

Answer 5

@madixy did u get the answer?

Answer 6

um so cos x - cos x + cos x= cos x?

Answer 7

it's correct :)

Answer 8

Thanks again!

Answer 9

welcome :)