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Algebra 2; Trigonometric Formulas
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What are the 3 basic Trigonometric Formulas?
I. Sine (sin) [read as sign]
II. Cosine (cos) [read as co-sign]
III. Tangent (tan) [read as it written]
Side c: Hypotenuse
Always the opposite of the right angle.
Sin, Cos, and Tan are used depending on the angles and measurements given.
Sin = Opposite Side (of referenced angle) / Hypotenuse
Cos = Adjacent Side (of referenced angle) / Hypotenuse
Tan = Opposite Side / Adjacent Side
How to remember these functions ?
S
O H -
C
A H -
T
O A
The initial letter of each set represents the functions, O represents Opposite, A represents Adjacent, and H represents Hypotenuse.
The other three functions are:
I. Cotangent (cot)
II. Secent (sec)
III. Cosecent (csc)
It turns out that the three functions referenced in the last card are the repirocals of the first three functions that were introduced.
Cot =_
____1_____
Tangent
Sec =
_____1_____
Cosine
Csc =
_____1_____
Sine
Author
Paynefan
ID
64022
Card Set
Algebra 2; Trigonometric Formulas
Description
Quick Notes on the 6 different types of Trigonometric Formulas, and a few rules about them.
Updated
2011-02-05T01:28:12Z
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