Question

2 sin 30 grade minus 4 cos 60 grade+ 3 Tg 45 grade​

Answer 1

$2\sin30 - 4\cos60 + 3\tg45 \\ = 2 \times \tfrac{1}{2} - 4 \times \tfrac{1}{2} + 3 \times 1 \\ = 1 - 2 + 3 \\ = 2$