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Trigonomic ratios Flashcards | StudBud

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Trigonomic ratios

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Sin Cos Tan

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Questions 9

Answers

1
What are the trigonometric functions you use to input an angle - the ratio between two sides of the triangle.
Sins, Cous Cous, Tan
Sine Cosine Tangent
Sign, Cousin, Tangerine
Sin, Cos, Tin
2
In Trigonometry you should round to?
1 SF (1 significant figure)
1dp
2dp (2 decimal places)
4 decimal places
3
We can work out the unknown angle by taking a ratio of 2 side lengths and using the.....
inverse trigonometric functions.
Pythagoras Thearem
Area
Perimeter
4
The ratio between an angle, the adjacent, and the hypotenuse is called cosine.
True
False
5
When using Trigonomic ratios for finding a Length, Set you calculator to the
degress function
scientific function
inverse function
shift function
6
The Sine function finds a ratio with both O and H.
True
False
7
Trigonometry gives us a way to relate?
the length of a right-angled triangle's sides with the triangle's angles.
The area of a triangle
The total of all angles
The length of a side of a right-angled triangle if given two lengths
8
when given a Right angled Triangle what should you do first?
Use Sine if you have the angle but an unknown O or H value
Label sides a, o, h
use pythagorus theorem if you have the value of an angle
work out the trigonomic ratio
9
S O/H C A/H T O/A What do these mean?
Tangent (angle)= Opposite divided by Hypotenuse
Cosine (angle) = Adjacent divided by Hypotenuse
Cosine(right angle)=Adjacent divided by Hypotenuse
Sine (angle) = Opposite divided by adjacent