# 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
04:45 (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.

Pinterest
https://in.pinterest.com/LearnCBSE/
Wordpress
https://cbselabs.wordpress.com/

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

Tagged under: ncert solutions,learncbse.,gyanpub,learn trigonometry,solve trigonometry,cbse mathematics class 10,algebra trigonometry,Trig Ratio Problems identities,trigonometry soh cah toa,Trigonometry : Proving trig Identities, trigonometric identities,Understanding Trig Identities,Trigonometric Identities,Complementary Angles Trig Ratios,Complementary Angle,Trig Ratios

Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.

Add multiple choice quizzes, questions and browse hundreds of approved, video lesson ideas for Clip

Make YouTube one of your teaching aids - Works perfectly with lesson micro-teaching plans

Play this activity

1. Students enter a simple code

2. You play the video

3. The students comment

4. You review and reflect

* Whiteboard required for teacher-paced activities

## Ready to see what elsecan do?

With four apps, each designed around existing classroom activities, Spiral gives you the power to do formative assessment with anything you teach.

Quickfire

Carry out a quickfire formative assessment to see what the whole class is thinking

Discuss

Create interactive presentations to spark creativity in class

Team Up

Student teams can create and share collaborative presentations from linked devices

Clip

Turn any public video into a live chat with questions and quizzes

### Spiral Reviews by Teachers and Digital Learning Coaches

@kklaster

Tried out the canvas response option on @SpiralEducation & it's so awesome! Add text or drawings AND annotate an image! #R10tech

Using @SpiralEducation in class for math review. Student approved! Thumbs up! Thanks.

@ordmiss

Absolutely amazing collaboration from year 10 today. 100% engagement and constant smiles from all #lovetsla #spiral

@strykerstennis

Students show better Interpersonal Writing skills than Speaking via @SpiralEducation Great #data #langchat folks!