I need help with these 3 questions please

NOTE: Remember for equations we want exact solutions ONLY unless otherwise noted! Decimal approximations will receive ZERO credit. All angles should be given in radians. Please put boxes around your final answers so I can find them easily. 1. Solve on [0,27): (4 points) 7 sin(2t) + 4 cos(t) = 0 2. Prove the identity USING OUR REGULAR PROOF FORMAT. (Hint: start with left side.) (3 points) sin x + sin y cos x + cos y = tan (2 (x + > > ) 3. Rewrite f (x) = 5 sin(3x) - 2cos (3x) in the form A sin (Bx + C). Round your final angle to two decimal places. (3 points)