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Interactive video lesson plan for: Pythagorean Identities to solve Trigonometry problems | CBSE class 10 maths solutions Trigonometry

Activity overview:

Using Pythagorean Identities to solve Trigonometry problems | CBSE class 10 maths solutions Trigonometry

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 Solutions Chapter 8 Trigonometry Exercise 8.4 Q3(2)
00:53 Trigonometric Ratios of Complementary Angles
Two angles are said to be complementary if their sum equals 90° pair of complementary angles A and 90° – A .
sin (90° – A) = cos A, cos (90° – A) = sin A ,
02:41 CBSE class 10 maths NCERT Solutions Chapter 8 Trigonometry Exercise 8.4 q4. Choose the correct option. Justify your choice.
02:48 (i)
03:15 Use Pythagorian Identity
secant squared theta minus tan squared theta = 1
03:28 (ii)
substitute the given angles
04:16 simplifying radicals
04:45 (iii)
05:10 reciprocal identity
05:56 Use Pythagorian Identity
sin squared theta plus cos squared theta = 1
06:24 (iv)
06:45 reciprocal identity
07:41 CBSE class 10 maths NCERT Solutions Chapter 8 Trigonometry Exercise 8.4 q2. Write all the other trigonometric ratios of ? A in terms of sec A.
07:45 What is trigonometry Identities ?
An equation is called an identity when it is true for all values of the variables involved.
An equation involving trigonometric ratios of an angle is called a trigonometric identity, if it is true for all values of the angle(s) involved
08:02 Pythagorian Identities
08:48 write sin A in terms of Sec A
09:07 Using Recipracal Identities , write cos A as (1/SecA).
09:17 Pythagorian Identity 1
10:11 SinA in terms of SecA.
10:49 Tan A in terms of SecA.
11:37 CosecA in terms of SecA.

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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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