$\"\"$

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The trigonometric function is $\"\"$ .

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Let $\"\"$

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The sum of the two functions form is $\"\"$ . $\"\"$

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(a)

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The function is $\"\"$ .

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Rewrite the function as $\"\"$ .

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Write the function $\"\"$ as $\"\"$ .

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Consider the functions as $\"\"$ and $\"\"$ .

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Draw a coordinate plane.

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Graph the functions $\"\"$ and $\"\"$ in the same coordinate plane. $\"graph$

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$\"\"$

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(b)

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The function is $\"\"$ .

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Rewrite the function as $\"\"$ .

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Write the function $\"\"$ as $\"\"$ .

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Consider the functions as $\"\"$ , $\"\"$ , and $\"\"$ .

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Draw a coordinate plane.

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Graph the functions $\"\"$ , $\"\"$ , and $\"\"$ in the same coordinate plane.

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$\"graph$ $\"\"$

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(c)

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The function is $\"\"$ .

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Rewrite the function as $\"\"$ .

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Write the function $\"\"$ as $\"\"$ .

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Consider the functions as $\"\"$ , $\"\"$ , $\"\"$ , and $\"\"$ .

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Draw a coordinate plane.

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Graph the functions $\"\"$ , $\"\"$ , $\"\"$ , and $\"\"$ in the same coordinate plane.

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$\"graph$ $\"\"$

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(a)

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Graph of the function $\"\"$ is : \ \

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$\"graph$

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(b)

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Graph of the function $\"\"$ is : \ \

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$\"graph$

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(c)

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Graph of the function $\"\"$ is :

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$\"graph$