Question

Which of the following expressions has the same value as cos30°
?(1 point)
Responses

cosπ6
cosine pi over 6

sinπ6
sine pi over 6

cos60°
cosine 60 degrees

sin30°
sine 30 degrees
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Answer 1

cosπ/6

Reason: 30° = π/6, so cos30° = cos(π/6) = √3/2. The others (cos60° and sin30° = 1/2) are not equal to √3/2.