Question

FInd the approximations to at least two decimal places for the coordinates of Point Z in the figure below. The angle theta or Q is -80 degrees and the radius is 11.

Z = ?

Also if you can explain to me, that would be great.

Answer 1

check the picture below.

thus the rectangular coordinates are [ 11cos(-80°), 11sin(-80°) ].

make sure your calculator is in Degree mode.