Problem

Score: $1 / 3$ Penalty: none Question Watch Video Find all angles, $0^{\circ} \leq \theta<360^{\circ}$, that solve the following equation. \[ \sin \theta=-\frac{\sqrt{2}}{2} \] Answer Attempt 1 out of 2 Additional Solution No Solution \[ \theta= \] Submit Answer

Solution

Step 1 :The given equation is \(\sin \theta=-\frac{\sqrt{2}}{2}\).

Step 2 :We know that sine is negative in the third and fourth quadrants.

Step 3 :The reference angle for \(\frac{\sqrt{2}}{2}\) is \(45^\circ\).

Step 4 :So the solutions to the equation are \(180^\circ + 45^\circ\) and \(360^\circ - 45^\circ\).

Step 5 :angle1 = 225

Step 6 :angle2 = 315

Step 7 :Final Answer: The solutions to the equation are \(\boxed{225^\circ}\) and \(\boxed{315^\circ}\).

From Solvely APP
Source: https://solvelyapp.com/problems/45909/

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