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Find the Exact Value
A) sin(19π2)\sin \left( \frac { 19 \pi } { 2 } \right)

Question 65

Essay

Find the exact value
a) sin(19π2)\sin \left( \frac { 19 \pi } { 2 } \right)
b) cot(675)\cot \left( - 675 ^ { \circ } \right)

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