Soon. solve the right triangle shown in the figure.

option c.

Step-by-step explanation:

To find AB you can use this trigonometric identity:

 In this case:

Substituting values and solving for AC, we get:

To find AB you can use the Pythagorean Theorem:

Where "c" is the hypotenuse and "a" and "b" are the legs of the triangle.

In this case:

Substituting values and solving for AB, we get:

 Since the sum of the interior angles of a triangle is 180 degrees, we know that  ∠B is:

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.