# Interactive video lesson plan for: Trigonometry ratios Lessons-Definitions | Basic Trigonometric Ratios (Solved problems)

#### Activity overview:

Trigonometry ratios Lessons-Definitions | Basic Trigonometric Ratios (Solved problems)

http://www.learncbse.in/ncert-class-10-math-solutions/
http://www.learncbse.in/ncert-solutions-for-class-10-maths-chapter-8-introduction-to-trigonometry/
http://www.learncbse.in/rd-sharma-class-10-solutions-chapter-5-trigonometric-ratios/

00:04 CBSE class 10 maths NCERT Solutions Trigonometry Exercise 8.1 Q1. In triangle ABC, right-angled at B, AB = 24 cm, BC = 7 cm. Determine
(i) sin A, cos A 003:00 (ii) sin C, cos C
00:25 Naming the sides | Finding sides of right triangle.
00:45 Pythagoras Theorem
01:40 Trigonometric Ratio Defination
sine of angle theta = side opposite to angle theta / hypotenuse
sin is equal to opposite over hypotenuse.
Remember as ' SOH '
02:15 cosine of angle theta = side adjacent to angle theta / hypotenuse
Remember as ' CAH ' Cosine equals Adjacent over Hypotenus.

03:54 CBSE class 10 maths NCERT Solutions Trigonometry Exercise 8.1 Q2. In Fig. 8.13, find tan P – cot R.
04:08 Finding the sides of right triangle
04:31 Pythagoras Theorem
05:30 Tangent of angle theta = side opposite to angle theta / side adjacent to angle theta.Remeber as ' TAO '. Tan is adjacent over
06:18 cotangent of angle theta = side adjacent to angle theta / side opposite to angle theta

07:14 CBSE class 10 maths NCERT Solutions Trigonometry Exercise 8.1 Q3. If sin A = 3/4 calculate cos A and tan A.
07:47 Finding the sides of right-angled triangle
08:25 sin is equal to opposite over hypotenuse. Remember as ' SOH '
09:53 cosine of angle theta = side adjacent to angle theta / hypotenuse
Remember as ' CAH ' Cosine equals Adjacent over Hypotenus.
10:28 Tangent of angle theta = side opposite to angle theta / side adjacent to angle theta.Remeber as ' TAO '. Tan is adjacent over

10:41 CBSE class 10 maths NCERT Solutions Trigonometry Exercise 8.1 Q4. Given 15 cot A = 8, find sin A and sec A.
11:10 Naming the sides
11:38 cotangent of angle theta = side adjacent to angle theta / side opposite to angle theta
12:25 Pythagoras Theorem
13:07 Trigonometric Ratio Defination
sine of angle theta = side opposite to angle theta / hypotenuse
sin is equal to opposite over hypotenuse. Remember as ' SOH '
13:26 Trigonometric Ratio Defination 'secant'
secant of angle theta = hypotenuse / side adjacent to angle theta

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learncbse.in
CBSE solutions for class 10 maths Chapter 8 Trigonometry Exercise 8.3
CBSE class 10 maths NCERT Solutions Chapter 8 Trigonometry Exercise 8.4 | Trigonometric Identities
CBSE class 10 maths NCERT Solutions Chapter 8 Trigonometry
Solutions for CBSE class 10 Maths Trigonometry
NCERT solutions for class 10 maths Trigonometry
NCERT solutions for CBSE class 10 maths Trigonometry
CBSE class 10 maths Trigonometry
Common core Math Trigonometry

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