Question 1113075
y, how tall the tree when standing
r, distance from tip of shadow to top of tree



{{{6/r=cos(70)}}}
{{{r/6=1/cos(70)}}}
{{{r=6/cos(70)}}}



{{{y/r=sin(70)}}}
{{{y=r*sin(70)}}}
{{{y=(6/cos(70))sin(70)}}}


{{{y=6*sin(70)/cos(70)}}}


Cut that into 4-meter sections.
{{{(3/2)(sin(70)/cos(70))}}}--------compute this using calculator.






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recognize that {{{sin(70)/cos(70)=tan(70)}}}.