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01 - Trigonometry for Beginners - Class 10 - Maths Video Lecture

FAQs on 01 - Trigonometry for Beginners - Class 10 - Maths Video Lecture

1. What is trigonometry?

Ans. Trigonometry is a branch of mathematics that deals with the relationships between the angles and sides of triangles. It involves the study of trigonometric functions such as sine, cosine, and tangent, which are used to solve various problems related to triangles and periodic phenomena.

2. How is trigonometry useful in real life?

Ans. Trigonometry has numerous real-life applications, such as in architecture, engineering, physics, and navigation. It is used to calculate distances and heights, determine the motion of objects, design buildings and structures, analyze waves and vibrations, and solve problems involving angles and distances.

3. What are the basic trigonometric functions?

Ans. The three basic trigonometric functions are sine (sin), cosine (cos), and tangent (tan). These functions relate the angles of a right triangle to the ratios of the lengths of its sides. Sine is the ratio of the length of the side opposite the angle to the hypotenuse, cosine is the ratio of the adjacent side to the hypotenuse, and tangent is the ratio of the opposite side to the adjacent side.

4. How do you find the value of trigonometric functions?

Ans. The value of trigonometric functions can be found using tables, scientific calculators, or trigonometric identities. Tables provide the values of trigonometric functions for specific angles, while calculators can directly calculate the values for any angle. Trigonometric identities, such as the Pythagorean identity and sum/difference identities, can be used to simplify or derive the values of trigonometric functions.

5. What are the applications of trigonometric ratios?

Ans. Trigonometric ratios, such as sine, cosine, and tangent, are used in various applications. They are used to solve problems involving angles and distances, determine the height and distance of objects, analyze periodic phenomena like waves and vibrations, calculate trajectories in physics and engineering, and navigate in land, air, and sea using compasses and GPS systems.

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