Question

Evaluate cos 300' without using a calculator, 2 O A. 1 / O B. 1 о c va

Answer 1

Answer:

$Cos \ 300 = \dfrac{1}{2}$

Step-by-step explanation:

  $\sf \boxed{Cos \ (2\pi - \theta) = Cos \ \theta}$

Cos 300 = Cos ( 360 - 60)

               = Cos 60

               $\sf = \dfrac{1}{2}$