Use a graphing calculator to determine which expression can be used to complete the identity below. Then prove the identity algebraically. 3 cos x+ sin °x = ? cos x+ sin x

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Chapter5: Identities And Formulas
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Use a graphing calculator to determine which expression can be used to complete the identity below. Then prove the identity algebraically.
3
3.
cos "x+ sin x
= ?
cos x+ sinx
....
3
3
cos x+ sin °x
= ?
ccos x+ sin x
Which of the following expressions completes the identity
OA. 1+ cOS x sin x
OB.
coS x sin x-1
C C. 1- coS x sin x
3.
ccs x+ sin
3x
To prove the identity algebraically, first factor the numerator of the given expression,
Cos x+ sin x
3
cos "x+ sin°x
Cos x+ sin x
cos x+ sin x
(Type your answer in factored form. Do not simplify.)
Transcribed Image Text:Use a graphing calculator to determine which expression can be used to complete the identity below. Then prove the identity algebraically. 3 3. cos "x+ sin x = ? cos x+ sinx .... 3 3 cos x+ sin °x = ? ccos x+ sin x Which of the following expressions completes the identity OA. 1+ cOS x sin x OB. coS x sin x-1 C C. 1- coS x sin x 3. ccs x+ sin 3x To prove the identity algebraically, first factor the numerator of the given expression, Cos x+ sin x 3 cos "x+ sin°x Cos x+ sin x cos x+ sin x (Type your answer in factored form. Do not simplify.)
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