Question

Solve please
Cos 64 degrees =y/8

Answer 1

cos(64) = ¹/₈y
8cos(64) = 8(¹/₈y)
8cos(64) = y
8(0.44) ≈ y
3.52 ≈ y

Answer 2

The value of y is 3.51

Explanation:

The given equation is Cos 64 = y/8

We have to calculate the value of y

Since Cos 64° = 0.43837

By putting value of Cos 64 in the equation

0.43837 =
`(y)/(8)`

y = 0.43837 × 8

= 3.5069 ≈ 3.51

Therefore, the value of y = 3.51