Introduction to Trigonometry - CBSE Class 10 Mathematics Guide NCERT Solutions of Ex 8.1

 

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Class 10 Mathematics CBSE Guide NCERT Solutions

Chapter 8 Introduction to Trigonometry

NCERT Solutions of Class 10 Math Textbook Exercise 8.1

Question 1: In Δ ABC right angled at B, AB = 24 cm, BC = 7 m.
Determine (i) sin A, cos A
(ii) sin C, cos C   
Solution:

Introduction to Trigonometry - CBSE Class 10 Mathematics Guide NCERT Solutions of Ex 8.1


















Question 2: In the given figure find tan P − cot R

CBSE Class 10 Mathematics Guide - Introduction to Trigonometry - NCERT Solutions of Ex 8.1

Solution:
CBSE Class 10 Mathematics Guide - Introduction to Trigonometry - NCERT Solutions of Ex 8.1
















Question 3:
Class 10 Mathematics CBSE Guide - Introduction to Trigonometry - NCERT Solutions



Solution:
Class 10 Mathematics CBSE Guide - Introduction to Trigonometry - NCERT Solutions



























Question 4: Given 15 cot A = 8. Find sin A and sec A  
Solution:



























Question 5:




Solution:
Introduction to Trigonometry - CBSE Class 10 Mathematics Guide NCERT Solutions of Ex 8.1



























Question 6: If A and B are acute angles such that cos A = cos B, then show that A = B.
Solution:
 

Question 7:  

 



Solution:

Question 8:
 






Solution:





















































Question 9:




Solution:  Taking help from the above solution, try yourself.  

Question 10: In ΔPQR, right angled at Q, PR + QR = 25 cm and PQ = 5 cm. Determine the values of sin P, cos P and tan P.  
Solution:




























Question 11:
 








Solution:
    


























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