Use Identities to Solve Trigonometric Equations
Solve the Equation on the Interval

question 166

Multiple Choice

Use Identities to Solve Trigonometric Equations
Solve the equation on the interval [0, 2π) .
- $\sin \left( x + \frac { 5 \pi } { 4 } \right) + \sin \left( x - \frac { 5 \pi } { 4 } \right) = 1$

• A) \(\frac { 5 \pi } { 4 } , \frac { 7 \pi } { 4 }\)
• B) \(\frac { 3 \pi } { 2 } , 3 \pi\)
• C) \(\frac { 3 \pi } { 4 } , \frac { 5 \pi } { 6 }\)
• D) \(\frac { 5 \pi } { 4 } , \frac { 5 \pi } { 6 }\)

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