Triangle abc is a right triangle. find the measure of side b. round to the nearest hundredth. a) 6.13 cm b) 6.71 cm c) 9.53 cm d) 10.54 cm

the answer is c) 9.53

step-by-step explanation:

tan(40) = 8/x

- we multiply x on both sides so we are left with

x tan(40) = 8

- and we now divide by tan(40) both sides. x stands alone so it is not included.

tan(40)/tan(40) and 8/tan(40)

if we put this in the calculator you get 9.53

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.