Does sin (-30) equal -sin (30)?

The vertices of a rectangle are given in the columns of the matrix . if is found to perform a transformation, what are the coordinates of the transformed rectangle? (0, 0), (0, –3), (–3, –3), (–3, 0) (0, 0), (0, 3), (3, 3), (3, 0) (0, 0), (0, 3), (–3, –3), (–3, 0) (0, 0), (0, 3), (–3, 3), (–3, 0)

When turned about its axis of rotation, which shape could have created this three-dimensional object?

In triangle opq right angled at p op=7cm,oq-pq=1 determine the values of sinq and cosq