How to Find the Angle when Given the Value of Cosine

How to Find the Angle when Given the Value of Cosine

Assessment

Interactive Video

Mathematics

11th Grade - University

Hard

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The video tutorial explains the concept of cotangent in trigonometry, focusing on its representation as the ratio of x over y on the unit circle. It identifies specific points on the unit circle where cotangent equals 1, particularly at π/4 or 45 degrees. The tutorial also explores cotangent values in other quadrants and emphasizes the importance of constraints that limit the focus to the first quadrant, highlighting the significance of understanding these constraints in solving trigonometric problems.

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5 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

How does the unit circle help in determining the values of cotangent?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

What is the significance of the angle π / 4 in relation to cotangent?

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

Describe the relationship between X and Y in the context of cotangent.

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4.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain why cotangent is equal to 1 at two different angles.

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5.

OPEN ENDED QUESTION

3 mins • 1 pt

What constraints are placed on the angles when finding cotangent equal to 1?

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