Probability check point 6 , you have a bag containing 2 red balls, 4 green balls, and 5 purple balls. you draw one ball from the
1 answer:
You might be interested in
Answer:
A and C
Step-by-step explanation:
Given
2cos²x - 2 = 0 ( add 2 to both sides )
2cos²x = 2 ( divide both sides by 2 )
cos²x = 1 ( take the square root of both sides )
cos x = ± = ± 1
cos x = 1 ⇒ x = (1) = 0°
cos x = - 1 ⇒ x = (- 1) = 180°