Question

it is very easy but something is missing​

Answer 1

Step-by-step explanation:

2sin²30° = 2 × (1/2)² = 2 × 1/4 = 1/2

3 cos²45° = 3 × ( 1/√2)² = 3× 1/2 = 3/2

tan²60° = (√3)² = 3

So,

$\frac{1}{2} - \frac{3}{2} + 3$

$= \frac{ - 2}{2} + 3$

$= - 1 + 3$

$= 2$

I hope this will help you. :)

Have a nyc day.