The value of x for given trigonometric expression is 3π/4.
What is Trigonometry?
Trigonometry is the branch of mathematics that deals with the relationship between ratios of the sides of a right-angled triangle with its angles.
Here, given equation;
2 cos x + √2 = 0
2 cos x = -√2
cos x = -√2 / 2
cos x = -1/√2
x = cos⁻¹ (-1/√2)
x = cos⁻¹ ( cos 3π/4)
x = 3π/4
Thus, the value of x for given trigonometric expression is 3π/4.
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