0.813
tan (30 degrees) would be equal to 0.577350269.
1.37638 (rounded)
If B is 90 degrees, Tan A is BC / AB. But I don't know what you mean by Tan A by 2.
That is not correct. "tan x" is a function that depends on the value of "x"; it is not always pi. tan(x) is pi only if 'x' is about 72.3 degrees, 252.3 degrees, or either of these added to a multiple of 360 degrees.
It depends on the angle of depression of the sun. The answer would be 80ft * tan(90-angle of depression) At a depression angle of 40 degrees, the shadow would be 80 * tan (50) which equals 95.340ft
Tan 42 degrees = 0.9004
Tan(74 degrees) = 3.487414444.....
tan(22.5)=0.414213562
0.813
tan(61°) = 1.80405 (rounded)
tan 40o ~= 0.8391
2.41
0.26794919243112270647255365849413
tan(-60 degrees) = - sqrt(3)
tan(135 degrees) = negative 1.
tan (30 degrees) would be equal to 0.577350269.
The value of cos 40 degrees is approximately 0.766.