Solve for X when 7cos2x = 5

x = 22.21

Step-by-step explanation:

Given

7 · cos (2x) = 5

Divide 7 on both sides

7 · cos (2x) / 7 = 5 / 7

cos (2x) = 5/7

Divide cosine on both sides (meaning applying cos⁻¹ to the right-hand side)

2x = cos⁻¹ (5/7)

Divide 2 on both sides

2x / 2 = [cos⁻¹ (5/7)] / 2

(Rounded to the hundredth place)

Hope this helps!! :)

Please let me know if you have any questions

the square root of what number? if you add that, then someone will probably answer the question.

susie has 7 apples