
Trigonometric Functions and Angles

Interactive Video
•
Mathematics
•
9th - 10th Grade
•
Hard

Liam Anderson
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What trigonometric function is used to find the angle of inclination of a line in coordinate geometry?
Sine
Cosine
Cotangent
Tangent
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When finding the angle between two lines, what is the significance of the gradients of these lines?
They determine the length of the lines
They are used to find the midpoint of the lines
They help in calculating the angle between the lines
They are irrelevant in angle calculation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example given, what are the gradients of the lines y = 3x and y = x + 2?
3 and 2
3 and 1
2 and 1
1 and 0
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you find the obtuse angle between two lines if you know the acute angle?
Subtract the acute angle from 180 degrees
Add 90 degrees to the acute angle
Divide the acute angle by 2
Multiply the acute angle by 2
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do we use absolute value signs when calculating the acute angle between two lines?
To make the calculation easier
To ensure the angle is positive
To convert the angle to radians
To avoid using negative gradients
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when the product of the gradients of two lines equals -1?
The lines are parallel
The lines are perpendicular
The lines intersect at the origin
The lines are identical
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why is the angle between two perpendicular lines not calculated using the tangent function?
Because the tangent function is undefined at 90 degrees
Because the sine function is more accurate
Because the cosine function is easier to use
Because the tangent function is only for acute angles
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