# Trigonometric fx

When an acute angle φ is in the standard position, its terminal side passes through point P (1,3). Find trigonometric functions of

angle θ : sin φ, cos φ, tan φ, cotan φ.

angle θ : sin φ, cos φ, tan φ, cotan φ.

## Correct answer:

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#### You need to know the following knowledge to solve this word math problem:

**geometry**- analytic geometry
**arithmetic**- square root
**planimetrics**- Pythagorean theorem
- right triangle
- triangle
**goniometry and trigonometry**- sine
- cosine

#### Units of physical quantities:

#### Grade of the word problem:

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