Question

Solve the trigonometric equation such that 0 ≤ x ≤ 2????. Round to three decimal places.

√5 cos(x) − 2 = 0

Answer 1

Answer: x= 0.463

Explanation:

Given the equation √5 cos(x) − 2 = 0

To make 'x' the subject of the formula

√5cosx = 2

Cosx = 2/√5

Cosx = 0.89

x = arccos 0.89

x = 0.463