Q. 725.0( 1 Vote )

# True and False<br

False

Explanation:

We have, sin4θ – 2sin2θ – 1 = 0

Now,

sin2θ = 1±√2

sin2θ = 1+√2 or 1-√2

We know that, -1≤ sin θ ≤ 1

sin2θ ≤ 1

but sin2θ = 1+√2 or 1-√2

Which is not possible.

Hence, the above statement is false.

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