Basic Identities & Formula Trigonometric RBSE Class 10 Math 6.1
Trigonometric Formula RBSE 10 maths 6.1 useful formula and exercise Question Video Solution
Example No 7
Solution :
Question 1. Find the value of the following: (Q. 1 to 10) RBSE 10 Math 6.1
2 sin 45° cos 45°
Question 2. RBSE 10 Math 6.1
cos 45° cos 60° – sin 45° sin 60°.
Solution:
Question 3.
sin2 30° + 2 cos2 45° + 3 tan2 60°
Solution:
Question 4. https://modeducation.com/
3 sin 60° – 4 sin3 60°.
Solution:
Question 5.
Solution:
Question 6.
4 cot2 45° – sec2 60° + sin2 60° + cos2 90°.
Solution:
Question 7.
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Question 8.
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Question 9.
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Question 10.
Solution :
Question 11.
Find the value of x in the following modeducation.com
(i) cos x = cos 60° cos 30° + sin 60° sin 30°
(ii) sin 2x = sin 60° cos 30° – cos 60° sin 30°
(iii) √3 tan2x = sin 30° + sin 45° cos 45° + 2 sin 90°.
Solution :
Question 12.
Solution :
Question 13.
4 cot2 45° – sec2 60° – sin2 30° = –1/4
Solution :
Question 14.
4 sin 30° sin2 60° + 3 cos 60° tan 45° = 2 sec2 45° – cosec2 90°
Solution :
Question 15.
cosec2 45° sec2 30° sin3 90° cos 60° = 4/3
Solution :
Question 16.
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Question 17.
2(cos2 45° + tan2 60°) – 6(sin2 45° – tan2 30°) = 6
Solution :
Question 18.
(sec2 30° + cosec2 45°) (2 cos 60°+ sin 90° + tan 45°) = 10
Solution :
Question 19.
(1 – sin 45° + sin 30°) (1 + cos 45° + cos 60°) =7/4
Solution :
Question 20.
cos2 0° – 2 cot2 30° + 3 cosec2 90° = 2(sec2 45° – tan2 60°)
Solution :
Question 21.
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Question 22.
Solution :
Chapter 7 Trigonometric Identities Ex 7.1
Chapter 7 Trigonometric Identities Ex 7.2
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