Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Find the angle between the curves y 2 = 4x + 4 and y 2 = 36 (9 – x).
Text Solution
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Given curves are y 2 = 4x + 4 and y 2 = 36(9 – x) ......(i)
On solving , we get the point (8,6) and (8, – 6)
On differentiating equation (i) , we get
2y 
= 4 and 2y 
= – 36
⇒ 
= 
and 
= 
At point (8,6) , m 1 = 
= 
and m 2 = 
= – 3
m 1 m 2 = – 1
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