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

question 24

Multiple Choice

Evaluate (if possible) the sine, cosine, and tangent of the real number. $t = - \frac { \pi } { 2 }$

• A) \(t = - \frac { \pi } { 2 }\) corresponds to the point \(( x , y ) = ( 0,0 )\) . \(\begin{array} { l }
• \sin \left( - \frac { \pi } { 2 } \right) = 0 \\
• \cos \left( - \frac { \pi } { 2 } \right) = 0 \\
• \tan \left( - \frac { \pi } { 2 } \right) = 0
• \end{array}\)
• B) \(t = - \frac { \pi } { 2 }\) corresponds to the point \(( x , y ) = ( - 1,0 )\) . \(\begin{array} { l }
• \sin \left( - \frac { \pi } { 2 } \right) = - 1 \\
• \cos \left( - \frac { \pi } { 2 } \right) = 0 \\
• \tan \left( - \frac { \pi } { 2 } \right) = 0
• \end{array}\)
• C) \(t = - \frac { \pi } { 2 }\) corresponds to the point \(( x , y ) = ( 0 , - 1 )\) . \(\begin{array} { l }
• \sin \left( - \frac { \pi } { 2 } \right) = - 1 \\
• \cos \left( - \frac { \pi } { 2 } \right) = 0 \\
• \tan \left( - \frac { \pi } { 2 } \right) \text { is undefined }
• \end{array}\)
• D) \(t = - \frac { \pi } { 2 }\) corresponds to the point \(( x , y ) = ( - 1,0 )\) . \(\begin{array} { l }
• \sin \left( - \frac { \pi } { 2 } \right) = 0 \\
• \cos \left( - \frac { \pi } { 2 } \right) = - 1 \\
• \tan \left( - \frac { \pi } { 2 } \right) = 0
• \end{array}\)
• E)Not possible

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