To simplify the expression, we start by substituting tg(alpha) = 3 into the expression:
3cos(alpha) - 4sin(alpha) / 2sin(alpha) - 5cos(alpha)
= 3cos(alpha) - 4sin(alpha) / 2sin(alpha) - 5cos(alpha= 3(3) - 4(3) / 2(3) - 5(3) (Substitute tg(alpha) = 3= 9 - 12 / 6 - 1= -3 / -= 1/3
Therefore, the simplified expression is 1/3.
To simplify the expression, we start by substituting tg(alpha) = 3 into the expression:
3cos(alpha) - 4sin(alpha) / 2sin(alpha) - 5cos(alpha)
= 3cos(alpha) - 4sin(alpha) / 2sin(alpha) - 5cos(alpha
= 3(3) - 4(3) / 2(3) - 5(3) (Substitute tg(alpha) = 3
= 9 - 12 / 6 - 1
= -3 / -
= 1/3
Therefore, the simplified expression is 1/3.