Convert 3°21'15" to a decimal number of degrees. Do not round any intermediate computations.
Round your answer to the nearest thousandth.

sorry I don't know this

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c