Adjacent: A
Hypotenuse: H
Opposite: O
Primary Trigonometric Ratios
sin x = O / H
cos x = A / H
tan x = O / A
Reciprocal Trigonometric Ratios
cosec x = 1 / sin x
sec x = 1 / cos x
cot x = 1 / tan x
to those who are not familiar with this chapter
tan x = sin x / cos x
cot x = cos x / sin x
Special Angles
In this chapter, we have to concern of whether our calculator is in radian mode or degree mode to avoid carelss mistakes.
Enjoy the video below to explore more about trigonometric!
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