Question

Does anyone know this answer to this questions

Answer 1

-4.0

Step-by-step explanation

The given trigonometric equation is

`\tan \: 45 \degree - 10 \: \cos \: 60 \degree`

From special angles or using the unit circle.

`\tan \: 45 \degree = 1`

`\cos \: 60 \degree = (1)/(2)`

We make the substitution to get:

`1 - 10 ( (1)/(2) ))`

This simplifies to:

`1 - 5 = - 4`

Hence the correct answer is -4.0