Just the mention of Trigonometry strikes fear in your heart? Fret not, you are not alone. However, this is a problem that can be easily solved. Trigonometry is an easy topic to understand if you follow its real-life applications. Let us familiarize ourselves with the basis of trigonometry.

- Trigonometric Ratios
- Trigonometric Identities
- Trigonometry Chart
- Arctan Definition And Formula
- Perimeter Of Triangle Definition Formulas Example
- Obtuse Angle
- Right Angle
- Perimeter Of Triangle Definition Formulas Example
- Obtuse Angle
- Right Angle

**Q1. What are the six basic trigonometric functions?**

**A1.** The six basic trigonometric function are:

- Sine (sin) – opposite/ hypotenuse
- Cosine (cos) – adjacent/ hypotenuse
- Tangent (tan) – opposite/ adjacent
- Secant (sec) – hypotenuse/ adjacent
- Cosecant (cosec) – hypotenuse/ opposite
- Cotangent (cot) – adjacent/ opposite

Apart from these there are some other function of trigonometry.

**Q2. What are the three trigonometric ratios?**

**A2.** The three basic trigonometric ratios are: sine, cosine, and tangent commonly known as sin, cos, and tan. In a right triangle you can find sine, cosine, and tangent of either of the non-90-degree angles, that is angles of perpendicular and hypotenuse.

**Q3. What is the value of tan?**

**A3.** Tangent is an angle length of the opposite side that we divide by the length of the adjacent side, in a right triangle. Moreover, the tangent of an angle is the length of the opposite side divided by the length of the adjacent side.

**Q4. Is trigonometry applicable to all the triangles?**

**A4.** Basically, trigonometric functions are defined for right triangles, but they also work for non-right triangles. Furthermore, we know them as the law of sines and law of cosines. However, they work as follows for any triangle:

These are: Sin (a)/A = Sin (b)/ B = Sin (c)/ C. Here c equals 90 degrees, and then we can reduce it to Pythagorean’s theorem.