cbse-class-10-maths-ncert-solutions-chapter-8-trigonometry-ex-84-q5-trigonometric-identities

# Interactive video lesson plan for: CBSE class 10 maths NCERT Solutions Chapter 8 Trigonometry Ex 8.4 Q5 | Trigonometric Identities

#### Activity overview:

CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 Q5 | Trigonometric Identities

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/

00:02 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 Q5. Prove the trigonometric equations using trigonometric identities, where the angles involved are acute angles for which the expressions are defined
00:04 q5 (2)
00:19 Procedure for proving Trigonometric equations
00:41 Consider LHS of the trigonometric equation
01:20 algebra maths formulas | Algebraic Expressions and Formulas
USE (a-b)^2 expanding formula
01:58 Use Pythagorian Identity
sin squared theta plus cos squared theta = 1
02:59 Reciprocal Identity.
The ratios cosec A, sec A and cot A are respectively, the reciprocals of the ratios sin A, cos A and tan A
sec A = 1/cos A
03:13 How to prove Trigonometric identities.

03:35 Q5. Prove the trigonometric equations using trigonometric identities, where the angles involved are acute angles for which the expressions are defined
03:37 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 q5 (4)
03:59 solving trigonometric identities procedure
04:04 consider LHS of the trigonometric equation
04:31 Reciprocal Identity.
The ratios cosec A, sec A and cot A are respectively, the reciprocals of the ratios sin A, cos A and tan A
sec A = 1/cos A.
05:19 consider RHS of the trigonometric equation
05:30 Use Pythagorian Identity
sin squared theta plus cos squared theta = 1
06:00 a squared minus b square formula
06:25 LHS & RHS of the trigonometric equation are equal.
Hence,trigonometric identity is solved

09:48 SORRY FOR INCONVENIENCE, q5 (4) is repeated.
Scroll to 09:48 to watch next solution.

09:48 Q5. Prove the trigonometric equations using trigonometric identities, where the angles involved are acute angles for which the expressions are defined
09:52 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 q5 (7)
10:19 Procedure for proving Trigonometric equations using trigonometric identities
10:12 Take LHS of the trigonometric equation
11:04 Quotient Identity
tan A = sin A/cos A.
11:16 Use Pythagorian Identity
sin squared theta plus cos squared theta = 1
11:46 solving trigonometric expressions
12:30 LHS is RHS of the trigonometric equation.Trigonometric equation is proved.

12:35 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 q5 (10). Prove the trigonometric identities, where the angles involved are acute angles for which the expressions are defined
12:13 Learn how to prove trigonometric identities through our working model.
13:16 consider LHS of the trigonometric equation
13:25 Reciprocal Identity.
The ratios cosec A, sec A and cot A are respectively, the reciprocals of the ratios sin A, cos A and tan A.
cot A = 1 / tan A
14:16 consider middle expression of the trigonometric equation
14:30 use Reciprocal Identity
15:55 trigonometric identities are proved.

16:36 Q5. Prove the trigonometric identities, where the angles involved are acute angles for which the expressions are defined
16:40 CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.4 q5 (8).
17:03 Procedure for solving Trigonometric equations
17:12 Consider LHS of the trigonometric equation
18:27 Reciprocal Identity.
The ratios cosec A, sec A and cot A are respectively, the reciprocals of the ratios sin A, cos A and tan A.
cosec A = 1 / sin A.
18:50 Use Pythagorian Identity
19:06 Cosecant squared theta minus cot squared theta = 1
19:12 secant squared theta minus tan squared theta = 1
19:25 Simply the trigonometric expression.
19:52 LHS is RHS of the trigonometric equation.Trigonometric equation is proved.

Using the fundemental identities and the Pythagorean Identities
multiple examples of verifying trigonometric identities
How to Solve Trigonometric Identities Proving Problems
method to solve trigonometric identities problems
the Quotient Identities, Reciprocal Identities, and the Pythagorian Identities.

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learncbse.in
CBSE solutions for class 10 maths Chapter 8 Trigonometry Exercise 8.4
CBSE class 10 maths NCERT SolutionsChapter 8 Trigonometry Exercise 8.2 | 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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