trigonometric ratio of multiple and sub multiple angles prove that questions | lecture 7

Th lecture contains following questions on trigonometric ratio of multiple and submultiple angles Q) Prove that sin A.sin(60° - A).sin(60° + A) = 1/4(sin 3A). Q) Prov that 4sin A.sin(60° - A).sin(60° + A) = sin3A. Q) Prove that 4cosA.cos(60° - A).cos (60° + A) = cos3A. Q) Prove that tan A.tan(60° - A).tan(60° + A) = tan3A. Q) Find sin α, if tan (α/2) = 1/√3. Q) If tan (θ/2) = 2/3 find the value of 2sinθ + 3cosθ. Q) If tan x = - 3/4 and angle x lies in third quadrant then find i) sin 2X ii) cos 2x. trigonometric ratio of multiple and sub multiple angles problems sin of multiple angle formula based problems examples on sin of multiple angle formula Problems on sin of multiple angle formula cos of multiple angle formula based problems tangent of multiple angle formula based questions tangent of multiple angle formula based problems tangent of multiple angle formula based examples trigonometric ratio of multiple and sub multiple angles prove that questions Problems on trigonometric ratio of multiple angles formulas trigonometric ratio of multiple and sub multiple angles trigonometric ratio of multiple and sub multiple angles chapter trigonometric ratio of multiple and sub multiple angles diploma first semester trigonometric ratio of multiple and sub multiple angles first sem trigonometric ratio of multiple and sub multiple angles 1st sem