b is 38 degrees.
a is 52 degrees.
this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .
x^2 -12x + 36 + y^2 = 36
x^2 + y^2 = 12x
r^2 = 12rcos(theta)
r = 12 cos(theta)
Given that a thermometer reading 100◦F is placed in a medium having a constant temperature of 70◦F. After 6 min, the thermometer reads 80◦F.
We know that Newton law of cooling has formula as
where Ts is room temperature and To is initial temperature.
Using the fact that when t =6, T (6) = 80
T0 = 100 and Ts =70 we can find k
Using this we find temperature when t=20