1)Find the general solution of the equation 2tanθ = 3cosecθin radians.
2)Find the gereral solution of the equation 2cos²x - 5sinxcosx + 5sin²x = 1 in radians. Give your answer correct to 2 decimal places.
3)Find the general solution of the following equations in radians.
(a) sinθ - sin2θ + sin3θ=0
(b)sin3θsinθ = sin7θsin5θ
(c)sinθsin7θ + cos3θcos5θ =0
更新1:
Numeral Answer:: 1)2nπ± π/3 2)n +0.24 , nπ +0.79 3)(a) (nπ)/2 , 2nπ± π/3 (b)(nπ)/8 (c)(nπ)/2±π/2 , nπ±π/4
