Class 11th Maths – RD Sharma Chapter 8 : Trigonometric Formulae – Fill in the Blanks Type Questions (FBQs) Solutions (Step-by-Step Guide)

1. The value of (sin 70° + cos 40°)/(cos 70° + sin 40°) is ………….. Watch Solution
2. If tan(A + B) = p, tan(A – B) = q, then the value of tan 2A in terms of p and q is …………… Watch Solution
3. If 1 + cos 2x + cos 4x + cos 6x = k cos x cos 2x cos 3x, then k = …………. Watch Solution
4. The value of sin 50° – sin 70° + sin 10° is ……………………. Watch Solution
5. The value of 2 cos(π/13) cos(9π/13) + cos(3π/13) + cos(5π/13) is ………….. Watch Solution

Chapter 8: Transformation Formulae – R. D. Sharma Class 11th Maths

1. Transformation Formulae Exercise 8.1 Video Solution

2. Transformation Formulae Exercise 8.2 Video Solution

3. Transformation Formulae Multiple Choice Questions (MCQs) Video Solution Video Solution

4. Transformation Formulae Fill in the Blanks (FBQs) Video Solution

5. Transformation Formulae Very Short Answer Questions (VSAQs) Video Solution Video Solution