Published by:
CGP EDU Academic Team
Published on: August 13, 2026
(i) If 
= 0, then find the value of 
(ii) If 
, then show that 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(i) 
⇒ cos–1 α i = 0 ⇒ α i = 1
= 1 + 2 + 3 + . . . . . . . + n = n 
(ii) 
we know that – 
≤ sin–1 xi ≤ 
equility holds good only whensin–1 xi = 
i = 1, 2, 3......2n
⇒ xi = 1 
i = 1, 2, 3,...., 2n ⇒ 
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