Class 10 > Crash Course: Class 10 > What is Trigonometry?
What is Trigonometry? Video Lecture - Crash Course: Class 10
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FAQs on What is Trigonometry? Video Lecture - Crash Course: Class 10
| 1. What is trigonometry? |  |
Answer: Trigonometry is a branch of mathematics that deals with the relationships between the angles and sides of triangles. It focuses on the study of trigonometric functions such as sine, cosine, and tangent, which are used to solve various problems involving angles and distances.
| 2. How is trigonometry used in real-life applications? | |
Answer: Trigonometry finds its applications in various fields such as engineering, physics, architecture, and navigation. It is used to calculate distances and heights, analyze waveforms, design structures, predict celestial movements, and even in medical imaging.
| 3. What are the primary trigonometric functions? | |
Answer: The primary trigonometric functions are sine (sin), cosine (cos), and tangent (tan). Sine is the ratio of the length of the side opposite an angle to the hypotenuse, cosine is the ratio of the length of the side adjacent to an angle to the hypotenuse, and tangent is the ratio of the sine to the cosine of an angle.
| 4. How do you find the values of trigonometric functions? | |
Answer: The values of trigonometric functions can be found using a calculator or reference tables. However, in some cases, they can also be determined using the properties of right triangles. For example, by knowing the lengths of the sides of a right triangle, you can determine the values of sine, cosine, and tangent for the angles of the triangle.
| 5. Are there any important trigonometric identities? | |
Answer: Yes, there are several important trigonometric identities that are used to simplify trigonometric expressions and solve trigonometric equations. Some of the fundamental identities include the Pythagorean identities, reciprocal identities, quotient identities, and even–odd identities. These identities allow for the transformation and manipulation of trigonometric functions in various mathematical operations.
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