Answer:
Option 4
Step-by-step explanation:
Given:
Sinθ = 
Since, cos2θ = 1 - 2sin²θ
cos2θ = 
cos2θ = 1 - 
cos2θ = 
cos2θ = 
Therefore, Option 4 will be the answer.
Answer:
3x – 2 = 16
Step-by-step explanation:
Answer:
b = -6
Step-by-step explanation:
11/6 b = b-5
Subtract b from each side
11/6 b - b = b-b-5
Get a common denominator on the right
11/6 b - 6/6 b = -5
5/6 b = -5
Multiply by 6/5 to isolate b
6/5 * 5/6 b = 6/5 *(-5)
b = -6