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Selina Textbook Solutions: Trigonometrical Identities | Mathematics Class 10 ICSE PDF Download

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Trigonometrical Identities 
 
Exercise 21A 
Question 1. 
 
 
 
Solution: 
 
Question 2. 
 
 
Solution: 
 
Question 3. 
 
 
Page 2


Trigonometrical Identities 
 
Exercise 21A 
Question 1. 
 
 
 
Solution: 
 
Question 2. 
 
 
Solution: 
 
Question 3. 
 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
 
Solution: 
 
Page 3


Trigonometrical Identities 
 
Exercise 21A 
Question 1. 
 
 
 
Solution: 
 
Question 2. 
 
 
Solution: 
 
Question 3. 
 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
 
Solution: 
 
Question 6. 
 
 
Solution: 
 
Question 7. 
 
 
Solution: 
 
Question 8. 
 
 
Solution: 
 
 
Page 4


Trigonometrical Identities 
 
Exercise 21A 
Question 1. 
 
 
 
Solution: 
 
Question 2. 
 
 
Solution: 
 
Question 3. 
 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
 
Solution: 
 
Question 6. 
 
 
Solution: 
 
Question 7. 
 
 
Solution: 
 
Question 8. 
 
 
Solution: 
 
 
Question 9. 
 
 
Solution: 
 
 
Question 10. 
 
 
Solution: 
 
 
 
Question 11. 
 
 
 
 
Page 5


Trigonometrical Identities 
 
Exercise 21A 
Question 1. 
 
 
 
Solution: 
 
Question 2. 
 
 
Solution: 
 
Question 3. 
 
 
Solution: 
 
Question 4. 
 
Solution: 
 
Question 5. 
 
 
Solution: 
 
Question 6. 
 
 
Solution: 
 
Question 7. 
 
 
Solution: 
 
Question 8. 
 
 
Solution: 
 
 
Question 9. 
 
 
Solution: 
 
 
Question 10. 
 
 
Solution: 
 
 
 
Question 11. 
 
 
 
 
Solution: 
 
 
Question 12. 
 
 
Solution: 
 
 
Question 13. 
 
 
Solution: 
 
 
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