Question

2cos0°5sin(-90°)+4tg(-180°)

Answer 1

Ответ: так как cos 0=1, sin(-90)=-1, tg(-180)=0, тогда исходное выражение перепишем как 2*1*(-5)+4*0=2-5=-3.

Объяснение:

Answer 2

To solve this expression, let's break it down step by step:

1. cos(0°) = 1. The cosine of 0 degrees is equal to 1.
2. sin(-90°) = -1. The sine of -90 degrees is equal to -1.
3. tg(-180°) = tg(180°) = 0. The tangent of 180 degrees is equal to 0.

Substituting these values into the expression, we have:

2cos(0°) + 5sin(-90°) + 4tg(-180°) = 2(1) + 5(-1) + 4(0) = 2 - 5 + 0 = -3.

Therefore, the value of the expression 2cos(0°) + 5sin(-90°) + 4tg(-180°) is -3.