Trigonometry

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Last updated 2:43 PM on 5/14/25
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5 Terms

1
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What is the sine of an angle in a right triangle?

The sine of an angle is the ratio of the length of the opposite side to the length of the hypotenuse.

2
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What does cos(θ) represent in a right triangle?

The cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

3
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How do you calculate tangent (tan) of an angle?

The tangent of an angle is the ratio of the length of the opposite side to the length of the adjacent side.

4
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What is the formula for cotangent (cot) in terms of tangent?

Cotangent is the reciprocal of tangent: cot(θ) = 1/tan(θ).

5
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What is the definition of the line of depression?

The line of depression is the angle made by a line from the eye of an observer to an object below and a horizontal line.