# What is the Value of sin and cos infinity?

Trigonometry helps us to understand the relation between the sides and angles of a triangle. Sin and Cos are two of the six trigonometric ratios of a right-angled triangle.

## Answer: The value of sin and cos infinity lies between -1 to 1. There are no exact values defined for them.

Let's understand the conclusion.

**Explanation:**

We know that,

(-1) ≤ sin x, cos x ≤ (+1) for x ε (-α, +α)

i.e., The value of sin x and cos x always lies in the range of -1 to 1.

Also, ∞ is undefined thus, sin(∞) and cos(∞) cannot have exact defined values.

However, sin x and cos x are periodic functions having a periodicity of (2π).

### Thus, the value of sin and cos infinity lies between -1 to 1. There are no exact values defined for them.

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