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12. Trigonometric Functions - 3! 1부

12. Trigonometric Functions / Trigonometric Functions on Right Triangles / 문제 4

문제 4

Which algebraic expression equals cot(θ)?

A

1 + tan(θ)

B

sec(θ) · cos(θ)

C

sin(θ)/cos(θ)

D

cos(θ)/sin(θ)