JEE Mains Model Paper 12

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Question : 23 of 90

Marks: +1, -0

If ex =

√1+t−√1−t

√1+t+√1−t

and tan

y

2

= √

1−t

1+t

, then at t = 1/2 is :

−1
2
1
2
0
None

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