Trigonometric Functions - Sharp WriteView EL-W531 Operation Manual

Trigonometric Functions

Trigonometric functions determine the ratio of three sides
of a right triangle. The combinations of the three sides are
sin, cos, and tan. Their relations are:
Calculates the sine of an angle.
Calculates the cosine of an angle.
Calculates the tangent of an angle.
<Example>
The angle from a point 15 meters from
a building to the highest floor of the
building is 45°. How tall is the building?
[DEG mode]
Operation
45
1
View point
APPLICATIONS:
Trigonometric functions are useful in mathematics and various engineering
calculations. They are often used in astronomical observations, civil engi-
neering and in calculations involving electrical circuits, as well as in calcula-
tions for physics such as parabolic motion and wave motion.
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SHARP
15
5
23
θ
b
sin θ =
a
c
cos θ =
a
b
tan θ =
c
Display
a
b
c