Question

A) 3cos 180⁰ + 5tg270⁰ - tg60⁰​

Answer 1

Ответ:

3-√3

Объяснение:

cos180градусов будет равен -1

tg270градусов будет равен 0

tg60градусов будет равен корень из трех

Исходя из таблички, прикрепленной к ответу.

Следовательно, 3cos 180⁰ + 5tg270⁰ - tg60⁰​= 3* (-1)+5*0-√3=

=-3+0-√3=

=3-√3

Answer 2

To evaluate the expression, let's simplify each term step by step:

1. 3cos 180°: The cosine of 180° is equal to -1, so 3cos 180° = 3(-1) = -3.

2. 5tg 270°: The tangent of 270° is undefined (tg 270° = undefined).

3. -tg 60°: The tangent of 60° is √3, so -tg 60° = -√3.

Combining the simplified terms, the expression becomes:

-3 + 5tg 270° - tg 60° = -3 + 5(undefined) - (-√3)

Since tangent is undefined at 270°, the expression is not well-defined.