Final answer:
The question seems to refer to solving an equation, possibly quadratic or trigonometric in nature, but lacks complete information to provide a solution. Steps for solving quadratic equations using the quadratic formula have been outlined.
Step-by-step explanation:
The student's question appears to involve solving an equation, but the provided information is fragmentary and does not form a coherent mathematical problem. One possible interpretation suggests that the student may have been attempting to deal with a quadratic equation or trigonometric problem. Since the information is incomplete, it is not possible to provide a step-by-step solution. However, for quadratic equations, one can use the quadratic formula x = (-b ± √(b²-4ac))/(2a) to find solutions for x. For trigonometric equations involving angles, solutions may involve using inverse trigonometric functions or trigonometric identities.