standard_description: Multiply a vector (regarded as a matrix with one column) by a matrix of suitable dimensions to produce another vector. Work with matrices as transformations of vectors.
problem_activity: Given right triangle
$${A{BC}}$$
with hypotenuse
$${AB=8.5}$$
and
$${m\angle A=55^\circ}$$
, find
$${AC}$$
and
$${BC}$$
to the nearest hundredth.
[IMG]


aligns: no