Your car's back window is in the shape of a trapezoid with the dimensions shown. the 16 -inch window wiper cleans a part of the window in a semicircular pattern. what is the approximate area of the window that is not cleaned by the wiper?

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

irrational, cannot

sina-sinb

cosb+cosa

tana-tanb

cos0+cos x pi/3

20tan

step-by-step explanation:

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.