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The number of distinct real roots of the...

The number of distinct real roots of the equation,
`Delta=|(cosx, sin x, sinx),(sin x, cosx, sinx),(sinx, sinx, cosx)|=0`
in the interval `[-(pi)/(4),(pi)/(4)]` is :

A

1

B

4

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
c
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