Question

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

               $\sf = \dfrac{1}{2}$