Question

Sin90°·cos90° + cos180°·tan60° + sin270°

Answer 1

Ответ:

sin90 x cos90= 0

cos180 x tan60= -$\sqrt{3}$

sin270= -1

Пошаговое объяснение:

0-$\sqrt{3}$-1 = -$\sqrt{3}$-1≅-2,73205

Answer 2

Let's calculate the values of the trigonometric functions at the given angles and then perform the operations:

1. Sin(90°) = 1
2. Cos(90°) = 0
3. Cos(180°) = -1
4. Tan(60°) = √3

Now, let's plug these values into your expression:

1. Sin(90°) · Cos(90°) + Cos(180°) · Tan(60°) + Sin(270°)

2. 1 · 0 + (-1) · √3 + (-1)

Now, simplify the expression:

0 - √3 - 1

Now, combine like terms:

-√3 - 1

So, the value of the expression Sin(90°) · Cos(90°) + Cos(180°) · Tan(60°) + Sin(270°) is approximately equal to -√3 - 1.