Trigonometry Terms I
Complementary Angles: Learn
A right triangle consists of one angle of 90oand two acute angles. Each acute angle of a right triangle has the properties of sine, cosine and tangent.
The sine, cosine and tangent of an acute angle of a right triangle are ratios of two of the three sides of the right triangle.
The sine of the angle is the ratio of the length of the side opposite the angle divided by the length of the hypotenuse.
The cosine of the angle is the ratio of the length of the side adjacent to the angle divided by the length of the hypotenuse.
The tangent of the angle is the ratio of the length of the side opposite the angle divided by the length of side adjacent to the angle.
Trigonometry is like a story told from the perspective of one angle in a right triangle. The diagram below labels the sides of a right triangle from the perspective of the angle labeled "A". If we switched the story to the perspective of the other acute angle, the adjacent/opposite sides would also switch.
Trig Terms: Practice
00:00is the ratio of:
Press the Start Button To Begin
This is 0 percent correct.
|Game Name||Description||Best Score|
|How many correct answers can you get in 60 seconds?||0|
Extra time is awarded for each correct answer.
Play longer by getting more correct.
|How fast can you get 20 more correct answers than wrong answers?||999|
Math Lessons by Grade
- Estimation and Mental Math
- Naming Numbers
- Percents and Ratios
- Place Value