Back to Course Trigonometry : An Online Course for 12th Std., Competitive Exams, Scholarship Exams 0% Complete 0/9 Steps Introduction Section 1 Lesson 1 - Principal and General Solution of trigonometric Equation Trigonometry : An Online Course for 12th Std., Competitive Exams, Scholarship Exams Lesson 1 – Principal and General Solution of trigonometric Equation In Progress Lesson 2 of 9 In Progress ← Previous Lesson 1 – Principal and General Solution of trigonometric Equation