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It is the relationship between a given angle and two of the sides of a triangle.
There are three ratios , viz; Sine(Sin), Cosine(Cos) and Tangent(Tan).
Mathemtically written as
Sin(angle) = opposite/hypotenuse
Cos(angle) = adjacent / hypotenuse
Tan(angle) = opposite/ adjacent.
NB The angle referred to is NOT the right angle.
NNB The word 'Sine' is from Latin, and means curve. If you extend the Sine function beyond 360 degrees, , and plot it on a graph, you find it makes a wave-like curve. Cos mean 'Complementary Sine'.
NNNB All refers to an right-angled(90 degree) triangle.
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BeauA TRIGONOMIC ratio is a ratio between either the opposite side of an angle and the hypotenuse of a triangle (sine), the adjacent side of an angle and the hypotenuse of a triangle (cosine), or the opposite side of an angle and the adjacent side (tangent).
Mnemonic: SOH CAH TOA
S= sine
C= cosine
T= tangent
O= opposite
A= adjacent
H= hypotenuse
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What is the trigonometric ratio for Cos?
the adjacent side over the hypotenuse
What does sin stand for on a calulator?
The "sin" button on a calculator gives the sine trigonometric ratio of the given angle.
What name is given to the ratio of the length of the side opposite 30 degree to the length of hypotenuse?
There is no particular name for the trigonometric ratio which depends on the measure of a specific angle.
How do you find trigonometric ratios of angles greater than 90 degrees?
subtract 90 from it and find the trig ratio of that and it will be equal to the trig ratio that is over 90 degrees
What are the types of trigonometric functions?
There are three types of trigonometric functions, they are: 1- Plane Trigonometric Functions 2- Inverse Trigonometric Functions and 3- Hyperbolic Trigonometric Functions
