Trigonometric Functions

Table 1-34 Trigonometry keys

Keys

Description

 

 

]c, R, or C

Calculates sine, cosine, and tangent.

 

 

]o

Calculates inverse sine, inverse cosine,

and inverse tangent.

c, R, or C

 

 

 

]r

Calculates hyperbolic sine, cosine and

tangent.

c, R, or C

 

 

 

]ro

Calculates inverse hyperbolic sine,

cosine, and tangent.

 

c, R, or C

 

 

 

]3

Toggles between radians and degrees

modes. Degrees is the default setting.

 

 

 

Find Sin θ =.62 in degrees. If RAD is displayed, press ]3.

Table 1-35 Trigonometry example

KeysDisplayDescription

7SG

.62

Enters value of sine for θ .

 

 

 

 

]oc

38.32

Calculates θ .

 

 

 

 

20 At a Glance...