Here's the solution,
figure 1.
by using trigonometry,
=》
=》
=》
=》
=》
And,
=》
=》
=》
So, values are :
figure 2.
Since, it's an isosceles triangle, w = y,
So, by pythagoras theorem :
=》
=》
=》
=》
=》
=》
and we know, w = y, so their values will be equal to 7 units.