53) 2 sin 30° + 6 cos 60° - 4tg45°

Let's evaluate the expression step by step. First, we need to know the values of the trigonometric functions for the given angles: * sin 30° = 1/2 * cos 60° = 1/2 * tan 45° = 1 Now, substitute these values into the expression: $$2 \cdot \sin 30^\circ + 6 \cdot \cos 60^\circ - 4 \cdot \tan 45^\circ = 2 \cdot \frac{1}{2} + 6 \cdot \frac{1}{2} - 4 \cdot 1$$ Perform the multiplications: $$= 1 + 3 - 4$$ Perform the addition and subtraction from left to right: $$= 4 - 4$$ $$= 0$$ So, the result of the expression is 0. Answer: 0