The space inside a circle is the _ of the circle.

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

How do i start to solve? would appreciate a walk-thru! a bird sitting 16ft above the ground in an apple tree dislodges an apple. after how many seconds does the apple land on the ground? (assuming that no branches will interfere with it's fall)

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827