 # Trigonometric Ratios Worksheet

Before teaching your kids what trigonometric ratios are, it is essential that the children have a basic understanding of trigonometry. Trigonometry is a branch of mathematics that deals with relationships between angles and the side lengths of a triangle. There are six trigonometric angles, namely sine, tangent, cosine, cosecant, secant and cotangent. These six angles are used in all trigonometric ratios calculations. Trigonometric ratios are used when one has to find the ratio of the sides of a right-angled triangle. BYJU’S offers several trigonometric ratios worksheets that will allow children to have a primary and clear understanding of the chapter.

Formulas of Trigonometric Ratios

Having a basic understanding of trigonometric ratios will help your children in higher classes. To solve the trigonometric ratios worksheet, a child needs to know some basic formulas used to solve these trigonometric ratios.

• sin θ = Perpendicular/Hypotenuse
• cot θ = Base/Perpendicular
• tan θ = Perpendicular/Base
• cos θ = Base/Hypotenuse
• cosec θ = Hypotenuse/Perpendicular
• sec θ = Hypotenuse/Base

Apart from knowing these formulas, it will also be beneficial if they know the reciprocal formulas. The reciprocal formulas will help them to solve trigonometric ratios much faster,

• sin θ = 1/cosec θ
• cosec θ = 1/sin θ
• cos θ = 1/sec θ
• sec θ = 1/cos θ
• cot θ = 1/tan θ
• tan θ = 1/cot θ

It is true that some kids might face a hard time learning these formulas of trigonometric ratios. But on the brighter side, knowing these formulas will help them not only to solve trigonometry ratio worksheets PDF, but also understand the concepts much better when they are taught in the higher classes.

## Frequently Asked Questions on Trigonometric Ratios

### What are trigonometric ratios?

Trigonometric ratios are used when one has to find the ratio of the sides of a right-angled triangle. There are six trigonometric angles, namely sine, tangent, cosine, cosecant, secant and cotangent, which are used to solve these trigonometric ratio calculations.

### Where do you find worksheets related to trigonometry ratio?

It is important that kids develop a basic understanding of trigonometric ratios at an early age, as it will help them to grasp the concept later. And for that, one needs to do a lot of practice. BYJU’S provides plenty of trigonometry ratios worksheet PDFs which will help kids to practise and develop their basic understanding.

### Is it necessary to learn trigonometric ratio formulas?

Though not necessary, children can learn these trigonometric ratio formulas as it will help them to develop an understanding of this chapter, which will be helpful to solve trigonometric ratio calculations, later.