Use the unit circle, along with the definitions of the circular functions, to find the exact values for the given functions when
\(s = - \frac { \pi } { 2 }\) . Select the correct choice below and fill in any answer boxes in your choice. A. \(\sin ( - \frac { \pi } { 2 } ) = \)
(Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
B. The solution is undefined.
A. -1
Jason places a mirror on the ground \( 40 \) feet from the base of a tree. He walks backward until he can see the top of the tree in the middle of the mirror. At that point, Jason's eyes are \( 6 \) feet above the ground and he is \( 8 \) feet from the image in the mirror. Wha] is the height of the tree? A. \( 30 \) feet B. \( 32 \) feet C. \( 53 \) feet D. \( 46 \) feet
A. \( 30 \) feet
B. \( 32 \) feet
C. \( 53 \) feet
D. \( 46 \) feet
A \( 10 \) foot ladder is leaning against a building. The ladder makes a \( 45 \) degree angle with the building. How far up the building does the ladder reach?
A. \( 5 \sqrt { 2 } \) feet
B. \( 20 \sqrt { 2 } \) feet
C. \( 10 \sqrt { 2 } \) feet
D. \( 5 \) feet
