Question

sin 45° × cos 30° - cos 45° × sin 30°

Answer 1

Hii There!!!

Since,

sin45°= 1/√2

cos 30° = √3/2

cos45° = 1/√2

sin 30° = 1/2

Now substituting the values we get :-

=) 1/√2 × √3/2 - 1/√2 × 1/2

=) 1/√2 × 1/2 × ( √3 - 1 )

=) √2/2 × 1/2 × ( √3 - 1 )

=) √2 / 4 × ( √3 - 1 ) .


Hope it helps

Answer 2

Hi there

Your answer is :-

sin 45° = 1/√2

cos 30° = √3/2

cos 45° = 1/√2

sin 30° = 1/2


sin 45° × cos 30° - cos 45° × sin 30°

1/√2 × √3/2 - 1/√2 × 1/2

1/√2 × 1/2 × ( √3 - 1 )

√2/2 × 1/2 × ( √3 - 1 )

√2 / 4 × ( √3 - 1 ) ( Ans )


Thank You