A rectangle has dimensions 10 cm by 5 cm. Determine the measures of the angles at the point where the diagonals intersect.
The diagram below shows the rectangle with the diagonals and half one of the angles with size x. tan(x) = 5/2.5 = 2 , x = arctan(2) larger angle made by diagonals 2x = 2 arctan(2) = 127 (3 significant digits) Smaller angle made by diagonals 180 - 2x = 53
The number of moles of solute present in 1 kg of a solvent is called its
Evaluate: 11 + sqrt(-4 + 6×4÷3)