Cos2x=-√3/2 135485-3/cos^2x+2√3tanx-6=0

70∘53;2∘47,60∘;300∘ Explanation 3cos 2x cos x 2 = 0 Replace cos 2x by (2cos2x− 1) > 3(2cos2x− 1) cosx 2 = 0 How to solve a equation like 2cosx cos(x30) = 0 using scientific calculator First let's start by finding a solution to the given problem by using the Texas Instruments 92 Plus scientific calculator , or

3/cos^2x+2√3tanx-6=0-Bài viết Cuộc thi Tin tức Trợ giúp Xếp thời khóa biểu Chọn lớpAngular relationships are studied in trigonometry by comparing angles and sides of rightangled triangles There are two simple formulas for sin 2x (in terms of sin and cos) (in terms of tan) These are the main formulas of sin 2x But we can write this formula in terms of sin x (or) cos x alone using the trigonometric identity sin2x cos2x = 1