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यदि Delta(1)=|{:(x, sin theta, cos theta...

यदि `Delta_(1)=|{:(x, sin theta, cos theta),(-sin theta, -x,1),(cos theta, 1,x):}|` तथा `Delta_(2)=|{:(x, sin 2theta, cos2theta),(-sin 2theta, -x,1),(cos2 theta, 1,x):}| , x ne0`, तो सभी `theta in (0,(pi)/(2))` के लिए

A

`Delta_(1) - Delta_(2) = x (cos 2 theta - cos 4 theta)`

B

`Delta_(1) + Delta_(2) = -2x^(3)`

C

`Delta_(1) + Delta_(2) = -2(x^(3) + x-1)`

D

`Delta_(1) - Delta_(2) = -2x^(3)`

लिखित उत्तर

Verified by Experts

The correct Answer is:
B
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