Sharp EL-W516B 23'58, 23'58

Calculator Activity

ANGLE CONVERSIONS

OBJECTIVE: To make angle conversions by finding the missing angle of a polygon.

Angles can be expressed in degrees, radians and grads. Degrees can be expressed in either decimal degrees or degrees-minutes-seconds. Remember 180 =  radians = 200 grads. The formula for the sum of the angles of an n-side polygon in degrees is 180(n-2). Before inputting an

angle for conversion, press and then choose the appropriate angular units.

1. Convert 45 to radians and grads.

STEP 1: Set the angular units to degrees by pressing

.

STEP 2: Enter 45 by pressing .

STEP 3: Convert to radians by pressing .

STEP 4: Convert to grads by pressing .

2. Convert 1123'58" to decimal degrees.

STEP 1: Enter 1123'58" by pressing

.

STEP 2: Calculate decimal degrees by pressing .

STEP 3: Convert to a decimal by pressing .

3. Convert 2.718 to degrees-minutes-seconds.

STEP 1: Set the angular units to degrees by pressing

.

STEP 2: Enter 2.718 by pressing .

STEP 3: Calculate degrees-minutes-seconds by pressing .

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