Question

sin 30°×cos30°=1÷2sin30°-2​

Answer 1

Answer:

1

Secondary School Math 5 points

Sin60=2 sin 30 cos 30

Ask for details Follow Report by Krish350 12.05.2018

Answers

Sin60 ° = sin2*× 30°

from LHS

sin60° = √3/2

from RHS

2 sin30° ×cos30°

= 2×1/2×√3/2

2√3/2×2

√3/2

LHS = RHS

Answer 2

Answer:

LHS ≠ RHS

Step-by-step explanation:

sin 30° × cos 30° = 1 ÷ sin 30° - 2

LHS:

sin 30° × cos 30° = 1 / 2 × √3 / 2

                             = √3 / 4

RHS:

1 ÷ 2 sin 30° - 2 = 1 ÷ 2 × 1 / 2 - 2

                          = 1 ÷ 1 = 1

∴ LHS ≠ RHS

But I think if the question is cos 60°, then LHS will be equal to RHS.