Class 11th Maths – RD Sharma Chapter 7 : Value of Trigonometric Functions at Sum or Difference of Angles – Very Short Answer Questions (VSAQs) Solutions (Step-by-Step Guide)
If α + β – γ = π, and sin²α + sin²β – sin²γ = λ sin α sin β cos γ, then write the value of λ. Watch Solution
If x cos θ = y cos(θ + 2π/3) = z cos(θ + 4π/3), then write the value of 1/x + 1/y + 1/z. Watch Solution
Write the maximum and minimum values of 3 cos x + 4 sin x + 5. Watch Solution
Write the maximum value of 12 sin x – 9 sin²x. Watch Solution
If 12 sin x – 9 sin²x attains its maximum value at x = α, then write the value of sin α. Watch Solution
Write the interval in which the values of 5 cos x + 3 cos(x + π/3) + 3 lie. Watch Solution
If tan(A + B) = p and tan(A – B) = q, then write the value of tan 2B. Watch Solution
If cos(x – y)/cos(x + y) = m/n, then write the value of tan x tan y. Watch Solution
If a = b cos(2π/3) = c cos(4π/3), then write the value of ab + bc + ca. Watch Solution
If A + B = C, then write the value of tan A tan B tan C. Watch Solution
If sin α – sin β = a and cos α + cos β = b, then write the value of cos (α + β). Watch Solution
If tan α = 1/(1 + 2^–x) and tan β = 1/(1 + 2^x + 1), then write the value of α + β lying in the interval (0, π/2). Watch Solution
Chapter 7: Value of Trigonometric Functions at Sum or Difference of Angles – R. D. Sharma Class 11th Maths