Trigonometric equation can be solved by using standard algebraic techniques such as collecting like terms and factoring. The initial goal in solving a trigonometric equation is to isolate the trigonometric function in the equation. Example: Because cos(x) has a period of 2π, first find all solutions in the interval [0, 2π). The solutions are π/4 and 7π/4. The general solution of the equation can be found by adding multiples of 2π to each of these solutions: π/4 + 2nπ and 7π/4 + 2nπ. Solve the following equations: 1: , 0 ≤ x < 2¶ and and and 2: , 0 ≤ x < 2¶ and and and 3: , 0 ≤ x < 2¶ and and and and and and 4: , 0 ≤ x < 2¶ and and and 5: , 0 ≤ x < 2¶ x = 0 and and and and x = 0 and 6: , 0 ≤ x < 2¶ and and and and and 7: , 0 ≤ x < 2¶ and x = 0 and and 8: , 0 ≤ x < 2¶ and and Press the Submit button to see the results.