Question

Tg 60° . ctg 30° - cos 180° + sin 90°​

Answer 1

tg 60° * ctg 30° - cos 180° + sin 90°​ = √3  * √3  - (-1) + 1 = 3 + 1 + 1 = 5

Ниже представлена таблица со значениями:

Answer 2

Let's break down the expression step by step:

1. Tg 60° - This represents the tangent of 60 degrees. tan(60°) = √3

2. ctg 30° - This represents the cotangent of 30 degrees. cot(30°) = 1 / tan(30°) = 1 / (1/√3) = √3

3. cos 180° - This represents the cosine of 180 degrees. cos(180°) = -1

4. sin 90° - This represents the sine of 90 degrees. sin(90°) = 1

Now, let's plug these values back into the original expression:

√3 - √3 - (-1) + 1

Now, simplify the expression:

√3 + √3 + 1 + 1

Combine like terms:

2√3 + 2

So, the value of the expression Tg 60° - ctg 30° - cos 180° + sin 90° is 2√3 + 2.