Find all the solutions of trig equation with cotangent

Find all the solutions of trig equation with cotangent

Assessment

Interactive Video

Mathematics, Life Skills

11th Grade - University

Hard

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The video tutorial guides students through solving trigonometric equations by using substitutions and simplifications. It emphasizes understanding the notation and algebra involved, and finding all possible solutions, including those within a specific range. The teacher provides step-by-step instructions and clarifies common misconceptions, ensuring students grasp the concepts of trigonometric identities and their applications.

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7 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in solving the equation X^2 = 3?

Multiply both sides by 2

Take the square root of both sides

Subtract 3 from both sides

Add 3 to both sides

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't you multiply by 4 until the expression is outside the radical?

It changes the equation's balance

It makes the equation unsolvable

It violates mathematical rules

It doesn't affect the equation

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it beneficial to substitute cotangent with tangent in trigonometric equations?

Tangent is easier to spell

Tangent is more commonly used

Tangent simplifies the calculation by using reciprocal relationships

Tangent has fewer variables

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the relationship between angles that are equidistant from each other?

They are always 45 degrees apart

They are multiples of 2π apart

They are always 90 degrees apart

They are multiples of π apart

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many solutions are expected between 0 and 2π for the given trigonometric equation?

4 solutions

8 solutions

2 solutions

6 solutions

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the angle π/12 in the context of the problem?

It is irrelevant to the problem

It is the smallest angle in the unit circle

It is the largest angle in the unit circle

It is used to find additional solutions within the range

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the number of X-intercepts when the tangent graph is compressed?

The number of X-intercepts decreases

The number of X-intercepts remains the same

The number of X-intercepts increases

The number of X-intercepts becomes zero