A triangle is shown on the coordinate plane below. Which transformation would change the coordinates of vertex C to (2, −3)?

A.
a translation 4 units down and 3 units to the left
B.
a 90° counterclockwise rotation about the point (3, 2)
C.
a 90° clockwise rotation about the origin
D.
a reflection across the x-axis

It's D.

Step-by-step explanation:

The figure is rotated 90 degrees clockwise then translated down 3 units and left 2 units.

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

b is the correct answer