pythagorean-identities-to-solve-trigonometry-problems-cbse-class-10-maths-solutions-trigonometry

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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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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