Sharp W Series manual Trigonometric Functions, Example

Trigonometric Functions
Trigonometric functions determine the ratio of three sides			a
of a right triangle. The combinations of the three sides are
				b
sin, cos, and tan. Their relations are:
			θ
C alculates the sine of an angle.	sinθ =	b	c
		a
C alculates the cosine of an angle.	cosθ =	c
		a

C alculates the tangent of an angle. tanθ = bc

<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]

O per ation

45 15

1 5

View point

D isplay

DEG

A P P L IC AT IO N S:

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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