Assignment:
Solve the equation by any means. Find the exact solutions when possible and approximate ones otherwise.
Q1. 2sinx = 1
Q2. 2 sin²x - 3 sin x = 2
Q3. cos 2x = cos x
Hint first use an identity
Q4. sec²x + 3 tan²x = 13
Q5. sec² = 4 tan x - 2
Q6. 2 sin²x + sin x - 2 = 0
Provide complete and step by step solution for the question and show calculations and use formulas.