+23247 Using a graphing calculator (an on-line calculator can be found at https://www.desmos.com/calculator),
with y1 = tan(x) and y2 = .4cos²(x) - sin²(x) gives the intersection of these two graphs, which is the value of ∠a, as 16.2°.
+23247 Using a graphing calculator (an on-line calculator can be found at https://www.desmos.com/calculator),
with y1 = tan(x) and y2 = .4cos²(x) - sin²(x) gives the intersection of these two graphs, which is the value of ∠a, as 16.2°.
