Numbers called “elements” or “terms” of a sequence
Answer:
just use the concept that if two lines are perpendicular then product of slopes is -1
then you can find slope of other line by using -1/m1
where m1 is slope of the line given
then for that m2.use 2 point form of a line to find it's equation which passes through (4,-6)
<span>Let
h------------> height of window </span>
we know that
tan 51°=h/6-------> h=6*tan 51°-------> h=7.4 m
the answer is
h=7.4 m
see the attached figure