Chapter 3 – Trigonometric Functions
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Prove the following: 14. sin2 x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x
22
Oct
Prove the following: 14. sin2 x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x Prove the following: 14. sin2 x + 2 sin 4x + sin 6x = 4 cos^2 x sin 4x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Prove the following: 13. cos^2 2x – cos^2 6x = sin 4x sin 8x
22
Oct
Prove the following: 13. cos^2 2x – cos^2 6x = sin 4x sin 8x Prove the following: 13. cos^2 2x – cos^2 6x = sin 4x sin 8x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Prove the following: 12. sin^2 6x – sin^2 4x = sin 2x sin 10x
22
Oct
Prove the following: 12. sin^2 6x – sin^2 4x = sin 2x sin 10x Prove the following: 12. sin^2 6x – sin^2 4x = sin 2x sin 10x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Prove the following: 11. cos(3π/4 + x) – cos(3π/4 – x) = – sqrt2 sin x
22
Oct
Prove the following: 11. cos(3π/4 + x) – cos(3π/4 – x) = – sqrt2 sin x Prove the following: 11. cos(3π/4 + x) - cos(3π/4 - x) = - sqrt2 sin x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
Prove the following: 10. sin (n + 1)x sin (n + 2)x + cos (n + 1)x cos (n + 2)x = cos x
22
Oct
Prove the following: 10. sin (n + 1)x sin (n + 2)x + cos (n + 1)x cos (n + 2)x = cos x Prove the following: 10. sin (n + 1)x sin (n + 2)x + cos (n + 1)x cos (n + 2)x = cos x October 22, 2021 Category: Chapter 3 - [...]
Prove the following: 9. cos(3π/2 +x) cos (2π + x) [cot(3π/2 – x) + cot (2π + x)] = 1
22
Oct
Prove the following: 9. cos(3π/2 +x) cos (2π + x) [cot(3π/2 – x) + cot (2π + x)] = 1 Prove the following: 9. cos(3π/2 +x) cos (2π + x) [cot(3π/2 - x) + cot (2π + x)] = 1 October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class [...]
Prove the following: 8. cos(π + x) cos (-x) / sin (π + x) cos (π/2 + x) = cot^2x
22
Oct
Prove the following: 8. cos(π + x) cos (-x) / sin (π + x) cos (π/2 + x) = cot^2x Prove the following: 8. cos(π + x) cos (-x) / sin (π + x) cos (π/2 + x) = cot^2x October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class [...]
Prove the following: 7. tan(π/4 + x) / tan(π/4 – x) = (1 + tan x / 1 – tan x)^2
22
Oct
Prove the following: 7. tan(π/4 + x) / tan(π/4 – x) = (1 + tan x / 1 – tan x)^2 Prove the following: 7. tan(π/4 + x) / tan(π/4 - x) = (1 + tan x / 1 - tan x)^2 October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT [...]
Prove the following: 6. cos(π/4-x)cos(π/4-y)-sin(π/4-x)sin(π/4-y) = sin (x+y)
22
Oct
Prove the following: 6. cos(π/4-x)cos(π/4-y)-sin(π/4-x)sin(π/4-y) = sin (x+y) Prove the following: 6. cos(π/4-x)cos(π/4-y)-sin(π/4-x)sin(π/4-y) = sin (x+y) October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,
5. Find the value of: (ii) tan 15°
22
Oct
5. Find the value of: (ii) tan 15° 5. Find the value of: (ii) tan 15° October 22, 2021 Category: Chapter 3 - Trigonometric Functions , Maths , NCERT Exemplar Class 11 ,