Q. Find all solutions with 0∘≤θ≤180∘. Give the exact answer(s) in simplest form. If there are multiple answers, separate them with commas.cos(θ)=0____∘
Cosine at y-axis: Cosine of an angle is 0 at the points where the angle corresponds to the y-axis on the unit circle.
Angles on unit circle: The angles that correspond to the y-axis on the unit circle are 90° and 270°.
Excluding 270°: Since we are looking for angles between 0° and 180°, we exclude 270°.
Cosine = 0 at 90∘: The only angle between 0∘ and 180∘ where cos(θ)=0 is at 90∘.
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