Скачать или смотреть trigonometry class 10th exercise 8.2

Here is a simple and clear description of Trigonometry for Class 10 📐:
Trigonometry (Class 10) – Description
Trigonometry is a branch of mathematics that studies the relationship between the angles and sides of a right-angled triangle.
In Class 10, trigonometry mainly deals with trigonometric ratios, trigonometric identities, and their applications.
1. Trigonometric Ratios
There are six basic trigonometric ratios:
Sine (sin θ) = Perpendicular / Hypotenuse
Cosine (cos θ) = Base / Hypotenuse
Tangent (tan θ) = Perpendicular / Base
Cosecant (cosec θ) = 1 / sin θ
Secant (sec θ) = 1 / cos θ
Cotangent (cot θ) = 1 / tan θ
2. Trigonometric Identities
These are equations that are true for all values of θ, such as:
sin²θ + cos²θ = 1
1 + tan²θ = sec²θ
1 + cot²θ = cosec²θ
Students learn to prove and use these identities to solve problems.
3. Trigonometric Values
Students memorize the values of trigonometric ratios for standard angles: 0°, 30°, 45°, 60°, and 90°.
4. Applications of Trigonometry
Trigonometry is used to find:
Heights and distances
Angles of elevation and depression
Importance of Trigonometry
Trigonometry is widely used in:
Engineering
Architecture
Physics
Astronomy
Navigation
If you want, I can also provide a short exam-ready answer, notes, or examples for Class 10 😊