(Refer to Example 1.) Convert the Fahrenheit temperature to an equivalent Celsius temperature.
98.6° F
EXAMPLE 1 Converting temperature scales
In the United States, temperature is measured with either the Fahrenheit or the Celsius temperature scale. To convert Fahrenheit degrees F to Celsius degrees C, the formula can be used.
(a) Solve the formula for F to find a formula that converts Celsius degrees to Fahrenheit degrees.
(b) If the outside temperature is 20°C, find the equivalent Fahrenheit temperature.
Solution
(a) The reciprocal of
is
, so multiply each side by
.
The required formula is
.
(b) If C = 20°C, then.
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