Evaluate (If Possible) the Sine, Cosine, and Tangent of the Real

question 376

Multiple Choice

Evaluate (if possible) the sine, cosine, and tangent of the real number. $t = \frac { 9 \pi } { 4 }$

• A) \(t = \frac { 9 \pi } { 4 }\) corresponds to the point \(( x , y ) = \left( \frac { \sqrt { 2 } } { 2 } , - \frac { \sqrt { 2 } } { 2 } \right)\) . \(\begin{array} { l }
• \sin \left( \frac { 9 \pi } { 4 } \right) = - \frac { \sqrt { 2 } } { 2 } \\
• \cos \left( \frac { 9 \pi } { 4 } \right) = \frac { \sqrt { 2 } } { 2 } \\
• \tan \left( \frac { 9 \pi } { 4 } \right) = - 1
• \end{array}\)
• B) \(t = \frac { 9 \pi } { 4 }\) corresponds to the point \(( x , y ) = \left( \frac { \sqrt { 2 } } { 2 } , \frac { \sqrt { 2 } } { 2 } \right)\) . \(\begin{array} { l }
• \sin \left( \frac { 9 \pi } { 4 } \right) = \frac { \sqrt { 2 } } { 2 } \\
• \cos \left( \frac { 9 \pi } { 4 } \right) = \frac { \sqrt { 2 } } { 2 } \\
• \tan \left( \frac { 9 \pi } { 4 } \right) = 1
• \end{array}\)
• C) \(t = \frac { 9 \pi } { 4 }\) corresponds to the point \(( x , y ) = \left( - \frac { \sqrt { 2 } } { 2 } , - \frac { \sqrt { 2 } } { 2 } \right)\) . \(\begin{array} { l }
• \sin \left( \frac { 9 \pi } { 4 } \right) = - \frac { \sqrt { 2 } } { 2 } \\
• \cos \left( \frac { 9 \pi } { 4 } \right) = - \frac { \sqrt { 2 } } { 2 } \\
• \tan \left( \frac { 9 \pi } { 4 } \right) = 1
• \end{array}\)
• D) \(t = \frac { 9 \pi } { 4 }\) corresponds to the point \(( x , y ) = \left( - \frac { \sqrt { 2 } } { 2 } , \frac { \sqrt { 2 } } { 2 } \right)\) . \(\begin{array} { l }
• \sin \left( \frac { 9 \pi } { 4 } \right) = \frac { \sqrt { 2 } } { 2 } \\
• \cos \left( \frac { 9 \pi } { 4 } \right) = - \frac { \sqrt { 2 } } { 2 } \\
• \tan \left( \frac { 9 \pi } { 4 } \right) = - 1
• \end{array}\)
• E)Not possible

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