two *(one + three *cos(x)^ two /sin(x)^ two)/sin(x)^ two = zero
2 multiply by (1 plus 3 multiply by co sinus of e of (x) squared divide by sinus of (x) squared ) divide by sinus of (x) squared equally 0
two multiply by (one plus three multiply by co sinus of e of (x) to the power of two divide by sinus of (x) to the power of two) divide by sinus of (x) to the power of two equally zero
2*(1 + 3*cos(x)2/sin(x)2)/sin(x)2 = 0
2*1 + 3*cosx2/sinx2/sinx2 = 0
2*(1 + 3*cos(x)²/sin(x)²)/sin(x)² = 0
2*(1 + 3*cos(x) to the power of 2/sin(x) to the power of 2)/sin(x) to the power of 2 = 0
2(1 + 3cos(x)^2/sin(x)^2)/sin(x)^2 = 0
2(1 + 3cos(x)2/sin(x)2)/sin(x)2 = 0
21 + 3cosx2/sinx2/sinx2 = 0
21 + 3cosx^2/sinx^2/sinx^2 = 0
2*(1 + 3*cos(x)^2 divide by sin(x)^2) divide by sin(x)^2 = 0