Get Free NCERT Solutions for Class 10 Maths Chapter 8 Ex 8.1 Introduction to Trigonometry Class 10 Maths NCERT Solutions are extremely helpful while doing homework. Exercise 8.1 Class 10 Maths NCERT Solutions were prepared by Experienced ncert-books.in Teachers. Detailed answers of all the questions in Chapter 8 Maths Class 10 Introduction to Trigonometry Exercise 8.1 Provided in NCERT Textbook.Question 1.
In ∆ABC right angled at B, AB = 24 cm, BC = 7 cm. Determine:
(i) sin A, cos A
(ii) sin C, cos C
In given figure, find tan P – cot R.
If sin A = , calculate cos A and tan A.
Given 15 cot A = 8, find sin A and sec A.
Given sec θ = , calculate all other trigonometric ratios.
If ∠A and ∠B are acute angles such that cos A = cos B, then show that ∠A = ∠B.
If cot θ = , evaluate:
If 3 cot A = 4, check whether = cos² A – sin² A or not.
In triangle ABC, right angled at B, if tan A = , find the value of:
(i) sin A cos C + cos A sin C
(ii) cos A cos C – sin A sin C
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.
State whether the following statements are true or false. Justify your answer.
(i) The value of tan A is always less than 1.
(ii) sec A = for some value of angle A.
(iii) cos A is the abbreviation used for the cosecant of angle A.
(iv) cot A is the product of cot and A.
(v) sin θ = for some angle.