1. Find the area of the region bounded by y = cos x in 
2. Find the area bounded by the curve x = 4 - y2 and y-axis.
y - axis ⇒ x = 0
x = 4 - y2 ⇒ y2 = 4
⇒ y = ± 2
⇒ ( 0, - 2 ), ( 0, 2 ) points of intersection
y = 0 x = 4.
Hence the diagram is as under:
3. Find the area bounded by y = tan x and y = cot x with x - axis in the internal 
