i have a problem with this trig equation.
1)5sinxcosx - sinx = 0
set each factor equal to 0 and solve for x
2) tan(30 - x) = 2.
3) for the third question can someone prove this identity for me pls, i really have trouble proving it
sinxtanx + cosx = secx
change tanx to sinx/cosx , get a common denominator, and add the two terms on the left side.