Trigonometry : Trigonometry

Study concepts, example questions & explanations for Trigonometry

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Example Questions

Example Question #1 : Angles In Different Quadrants

What quadrant contains the terminal side of the angle  ?

Possible Answers:

Correct answer:

Explanation:

The coordinate plane is divided into four regions, or quadrants. An angle can be located in the first, second, third and fourth quadrant, depending on which quadrant contains its terminal side. When the angle is between  and , the angle is a third quadrant angle. Since  is between and , it is a thrid quadrant angle.

 

Example Question #61 : Angles

What quadrant contains the terminal side of the angle  ?

Possible Answers:

Correct answer:

Explanation:

First we can convert it to degrees:

 

 

The movement of the angle is clockwise because it is negative. So we should start passing through quadrant . Since is between and , it ends in the quadrant .

Example Question #1 : Angles In Different Quadrants

What quadrant contains the terminal side of the angle  ?

Possible Answers:

Correct answer:

Explanation:

The coordinate plane is divided into four regions, or quadrants. An angle can be located in the first, second, third and fourth quadrant, depending on which quadrant contains its terminal side.

 

When the angle is more than   we can divide the angle by and cut off the whole number part. If we divide by , the integer part would be and the remaining is . Now we should find the quadrant for this angle.

 

When the angle is between  and , the angle is a first quadrant angle. Since  is between  and , it is a first quadrant angle.

 

Example Question #1 : Angles In Different Quadrants

What quadrant contains the terminal side of the angle  ?

Possible Answers:

Correct answer:

Explanation:

The coordinate plane is divided into four regions, or quadrants. An angle can be located in the first, second, third and fourth quadrant, depending on which quadrant contains its terminal side.

 

When the angle is more than we can divide the angle by and cut off the whole number part. If we divide  by , the integer part would be  and the remaining is . Now we should find the quadrant for this angle.

 

When the angle is between and , the angle is a second quadrant angle. Since  is between and , it is a second quadrant angle.

 

 

 

 

Example Question #2 : Angles In Different Quadrants

What quadrant contains the terminal side of the angle  ?

Possible Answers:

Correct answer:

Explanation:

First we can convert it to degrees:

 

 

When the angle is more than we can divide the angle by and cut off the whole number part. If we divide  by , the integer part would be and the remaining is . Now we should find the quadrant for this angle.

 

When the angle is between  and , the angle is a third quadrant angle. Since  is between  and , it is a third quadrant angle.

 

Example Question #3 : Angles In Different Quadrants

What quadrant contains the terminal side of the angle ?

Possible Answers:

Correct answer:

Explanation:

First we can write:

 

 

The coordinate plane is divided into four regions, or quadrants. An angle can be located in the first, second, third and fourth quadrant, depending on which quadrant contains its terminal side. When the angle is between and , the angle is a second quadrant angle. Since is between and , it is a second quadrant angle.

Example Question #1 : Angles In Different Quadrants

In what quadrant does  lie? 

Possible Answers:

What are quadrants? 

4th 

3rd 

2nd 

1st 

Correct answer:

3rd 

Explanation:

When we think of angles, we go clockwise from the positive x axis.

Thus, for negative angles, we go counterclockwise. Since each quadrant is defined by 90˚, we end up in the 3rd quadrant. 

Example Question #1 : Angles In Different Quadrants

Which of the following answers best represent ?

Possible Answers:

Correct answer:

Explanation:

The angle 315 degrees is located in the fourth quadrant.  The correct coordinate designating this angle is .

The tangent of an angle is .

Therefore, 

Example Question #521 : Trigonometry

The angle divides which two quadrants?

Possible Answers:

IV and III

II and IV

II and III

I and II

I and IV

Correct answer:

I and II

Explanation:

is coterminal with the angle , or . This splits quadrants I and II: Quadrants

Example Question #71 : Angles

Which angle is not in quadrant III?

Possible Answers:

Correct answer:

Explanation:

First lets identify the angles that make up the third quadrant. Quadrant three is  to  or in radians,  to  thus, any angle that does not fall within this range is not in quadrant three.

Therefore, the correct answer,

is not in quadrant three because it is in the first quadrant.

This is clear when we subtract

.

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