Question

The value of (3sin 30 degrees - 4sin^3 (30 degrees))/(1 - 2sin^2 (30 degrees)) is


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Answer 1

Answer:

2sin30˚+2tan45˚−3cos60˚−2cos

2

30˚

=2×

2

1

+2×1−3×

2

1

−2(

2

3

)

2

=1+2−

2

3

−

2

3

=0