Pre-Calculus - Perfect triangle ratios
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The formulas to perfect triangle ratios, as well as some extra information to keep in mind.
Last updated 11:40 AM on 11/16/22
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21 Terms
1
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Sinθ
y/x
2
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cosθ
x/r
3
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tanθ
y/x
4
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cscθ
r/y
5
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secθ
r/x
6
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cotθ
x/y
7
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which term is across from the right angle box?
hypothenuse
8
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What is the pythagorean theorem?
a^2 + B^2 = C squared
9
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What is the side away from the hypothenuse?
opposite
10
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What is the side the perfect angle box is over?
adjacent
11
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In which quadrant are all the perfect ratio angles positive?
Quadrant 1
12
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In which quadrant(s) is Sinθ positive?
Q1, Q2
13
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In which quadrant(s) is Cosθ positive?
Q1, Q4
14
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In which quadrant(s) is Tanθ positive?
Q3
15
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In which quadrant(s) is cscθ positive?
Q2
16
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In which quadrant is secθ positive?
Q4
17
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In which quadrant is cotθ positive?
Q3
18
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What is the phrase used to remember the positive quadrants of each type of ratio?
All students take calculus
19
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What does sin stand for?
y
20
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What does cos stand for?
x
21
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What does C squared stand for?
r