sinθ cosθ tanθ

Evaluate the following without using calculators.1.5 sin217^。Cos233^。+5sin127^。Cos323^。 2.simplift (((cos(3兀/2)+A)/tan(A-兀)))+(1/tan((兀/2)-A))+cos(A-2兀) 3.how many roots are there in the equation sin 2x =0.5 where 0<=x <=360? 4.find the values ofθ from 0 to 360 inclusive satisfying the equation 5sin^2θ-2sinθcosθ-3cos^2θ=0 5.solve the equation 4sinA = 3tanA for 0<=A <=360 6.solve cos(3θ-45)=1/2 where 0<=θ <=360