Effect of
Multiplying a Trigonometric
Function by a
Constant
Multiplying a trigonometric function by a constant changes its
amplitude, as illustrated in Example 20.7.
EXAMPLE 20.7:
Graph of a Trigonometric
Function Multiplied by a Constant
E
XAMPLE
20.7:
Graph of a Trigonometric
Function Multiplied
by a Constant (Continued)
The period of a trigonometric function can be changed by
multiplying the angle by a constant, as illustrated in Example 20.8.
E
XAMPLE
20.8:
Changing the Period of a
Trigonometric Function
E
XAMPLE
20.8:
Changing the Period of a
Trigonometric Function (Continued)
Here we have shown how the amplitude and period of the sine
function can be changed by using a constant. The amplitudes and periods of the
other trigonometric functions can be changed in the same manner.
This chapter has discussed right angle trigonometry. The next
chapter generalizes the concepts of trigonometry to oblique (non-right)
triangles.
EXERCISES
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Industrial Press Inc.