Solved on Nov 07, 2023

Find the sine of 292 degrees as a function of a positive acute angle.

STEP 1

Assumptions1. We are asked to express sin292\sin292^{\circ} as a function of a positive acute angle. . We know that the sine function is periodic with a period of 360360^{\circ}.
3. We also know that sin(180+θ)=sinθ\sin (180^{\circ} + \theta) = -\sin \theta and sin(360θ)=sinθ\sin (360^{\circ} - \theta) = -\sin \theta.

STEP 2

First, we need to find an equivalent angle to 292292^{\circ} that lies within the first quadrant (0 to90 degrees). We can do this by subtracting multiples of 180180^{\circ} or 360360^{\circ} from 292292^{\circ} until we get an angle in the first quadrant.

STEP 3

Subtract 180180^{\circ} from 292292^{\circ}.
θ=292180\theta =292^{\circ} -180^{\circ}

STEP 4

Calculate the value of θ\theta.
θ=292180=112\theta =292^{\circ} -180^{\circ} =112^{\circ}

STEP 5

The angle 112112^{\circ} is still not in the first quadrant. So, subtract 9090^{\circ} from 112112^{\circ}.
θ=11290\theta =112^{\circ} -90^{\circ}

STEP 6

Calculate the value of θ\theta.
θ=11290=22\theta =112^{\circ} -90^{\circ} =22^{\circ}

STEP 7

Now, we have an acute angle θ=22\theta =22^{\circ}. But we need to consider the negative sign because we have used the identity sin(180+θ)=sinθ\sin (180^{\circ} + \theta) = -\sin \theta.

STEP 8

Therefore, sin292\sin292^{\circ} can be expressed as a function of a positive acute angle as followssin292=sin22\sin292^{\circ} = -\sin22^{\circ}So, sin292\sin292^{\circ} is equal to sin22-\sin22^{\circ}.

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