Question

I need some help please

Answer 1

JT is tangent to the circle and at the point of tangency, a right angle is formed.  Angle T is a right angle.  If angle J is the reference angle, side ET is opposite it measuring 3963.  The hypotenuse of this right triangle is 3963+4.8 which is 3967.8.  The trig identity that is the side opposite the reference angle over the hypotenuse is the sin ratio.  Setting it up will look like this: $AngJ= \frac{3963}{3967.8}$.  That gives us that ∠J=.9987902616.  Take the inverse sin of that on your calculator to find that ∠J=87.18° or 87.2°