Î”DEF is right angled at E. If mâˆ F = 30 deg, then find the val – McqOptions

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1.	Î”DEF is right angled at E. If mâˆ F = 30 deg, then find the value of (cosD - 1/âˆš2)._x005F_x000D_
A.	-1/2_x005F_x000D_
B.	(âˆš6-1)/âˆš3_x005F_x000D_
C.	(âˆš2-2)/2âˆš2_x005F_x000D_
D.	âˆš3-2
Answer» D. âˆš3-2

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