Question

Evaluate Cos 135° Plzzzzz​

Answer 1

Answer:

$Cos \: 135° = Cos(90° + 45°)$

$- Sin \: 45° \: - \frac{1}{ \sqrt{2} }$

Hope it Helped...

Answer 2

Answer:

Yes

Explanation:

cos(135°) = - ( 180° - 135° )

= - cos 45°

= - cos 45° = - 1 / √2 × 2√ / 2√ = √2 / 2