Question

Does anyone know this answer to this questions

Answer 1

ANSWER

-4.0

EXPLANATION

The given trigonometric equation is

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

From special angles or using the unit circle.

$\tan \: 45 \degree = 1$

$\cos \: 60 \degree = \frac{1}{2}$

We make the substitution to get:

$1 - 10 ( \frac{1}{2} ))$

This simplifies to:

$1 - 5 = - 4$

Hence the correct answer is -4.0