Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
a) What is the angle's measures (in radians)? picture 1
b) Consider the angle θ shown above measured (in radians) counterclockwise from an initial ray pointing in the 3-o'clock direction to a terminal ray pointing from the origin to (0.96,−2.74). What is the measure of θ (in radians)? picture 2
![(0.96,-2.74)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9c29752f-86c3-45f0-88d7-f9b322418366%2F44b405f5-8bfa-49df-9460-73bb969893a7%2F4hjldxc_processed.png&w=3840&q=75)
![Consider the angle shown below with an initial ray pointing in the 3-o'clock direction that measures 0 radians (where 0 < 0 < 2n). The circle's
radius is 2.2 units long and the terminal point is ( – 1.2, 1.84).
(-1.2?1.84)
-2
-1
1
2
-1
-2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9c29752f-86c3-45f0-88d7-f9b322418366%2F44b405f5-8bfa-49df-9460-73bb969893a7%2Fzalrcw3_processed.png&w=3840&q=75)
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