There are several ways to study trigonometry, for a student. But nothing can beat the effectiveness custom designed notes for students of CBSE Class 10, for topics like Introduction to Trigonometry. Here you can find comprehensive study, revision notes and tests for Class 10 Math topics like Introduction to Trigonometry. Students can hone their skills at deciphering, analysing and solving a variety of problems from the Introduction to Trigonometry, and get better marks in exams too! JOIN FOR FREE right now to gain access to animated videos and graphics that make learning fun and very easy.
Introduction to Trigonometry Chapter Study Material
Suppose a boy is standing in front of a lamp post at a certain distance. The height of the boy is 170 cm and the length of his shadow is 150 cm.
You can see from the above figure that the boy and his shadow form a right-angled triangle as shown in the figure below. Read More
Important NCERT Questions from Introduction to Trigonometry Chapter
Question 1:
In ΔABC right angled at B, AB = 24 cm, BC = 7 m. Determine
(i) sin A, cos A
(ii) sin C, cos C
Question 2:
Given 15 cot A = 8. Find sin A and sec A
Question 3:
If ∠A and ∠B are acute angles such that cos A = cos B, then show that
∠A = ∠B.
Question 4:
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.
Question 5:
State whether the following are true or false. Justify your answer.
(i) sin (A + B) = sin A + sin B
(ii) The value of sinθ increases as θ increases
(iii) The value of cos θ increases as θ increases
(iv) sinθ = cos θ for all values of θ
(v) cot A is not defined for A = 0°
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Popular Questions from Introduction to Trigonometry
You can see from the above figure that the boy and his shadow form a right-angled triangle as shown in the figure below. Read More
