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

Class 10 CBSE Guide NCERT Solutions > Class 10 Mathematics Solved

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:

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

Solution:

Question 3:

Solution:

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

Solution:

Question 5:

Solution:

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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