Question

If cos(x) = 0.5, then what is x?

Answer 1

Answer:

=60 the second option.

Step-by-step explanation:

Given the trigonometric ratio, we can find the value of the angle by simply finding the inverse of the given ratio.

If for example Cos ∅= a, then ∅=Cos⁻¹a

If Cos (x)= 0.5, then x= Cos⁻¹ 0.5

Cos⁻1 0.5=60°

The angle whose sine is 0.5 is ∅=60°

Answer 2

Answer: second option.

Step-by-step explanation:

You have that:

$cos(x)=0.5$

Then, to find the value of "x", you need to apply Arccosine ( This is the inverse function of the cosine).

Therefore, applying this in the procedure, you get that the value of "x" is the following:

$cos(x)=0.5\\\\x=Arccos(0.5)\\\\x=60\°$

You can observe that this matches with the second option.