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Title: Trigonometric Ratios of Special Angles
Description: Grade 9 Mathematics - Trigonometric Ratios of Special Angles, 30,45,60, and Examples
Description: Grade 9 Mathematics - Trigonometric Ratios of Special Angles, 30,45,60, and Examples
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The values of the trigonometric ratios of the special angles 30°, 45° and 60°
angle
sin
cos
tan
csc
sec
tan
30°
1
2
3
2
3
3
2
2 3
3
3
3
2
1
2
3
2 3
3
45°
60°
2
2
2
2
1
2
2
2
1
3
3
Directions: Draw a ☐ if the statement is a property of a 45°- 45°- 90° Triangle and a
∆ if it is a property of a 30°- 60°- 90° Triangle
...
The length of the hypotenuse is √2 times the length of the legs
...
The length of the hypotenuse is twice the length of the shorter leg
...
The length of the longer leg is √3 times the length of the shorter leg
...
The legs are congruent
...
The length of the shorter leg is one-half the length of the hypotenuse
Title: Trigonometric Ratios of Special Angles
Description: Grade 9 Mathematics - Trigonometric Ratios of Special Angles, 30,45,60, and Examples
Description: Grade 9 Mathematics - Trigonometric Ratios of Special Angles, 30,45,60, and Examples