Which of the following is equal to expression 2(sin 30°) – tan 45°?

Step 1: Evaluate sin 30° and tan 45°

The sine of 30 degrees is 0.5 and the tangent of 45 degrees is 1.

Step 2: Substitute the values into the expression

2(sin 30°) – tan 45° = 2(0.5) - 1

Step 3: Simplify the expression

= 1 - 1

Step 4: Final answer

= 0

So, the expression 2(sin 30°) – tan 45° is equal to 0.