3 uždavinys
Sprendimas:
S =
* 6* 4* sin(30)
| 1 |
| / 2 |
|
S =
* 6* 4* sin(30)$$S$$ = $$\frac{1}{2}\cdot 6\cdot 4\cdot sin(30)$$
| 1 |
| / 2 |
S =
*
$$S$$ = $$\frac{1}{2}\cdot \frac{6\cdot 4\cdot 1}{2}$$
| 1 |
| / 2 |
| 6* 4* 1 |
| / 2 |
S =
$$S$$ = $$\frac{3\cdot 4\cdot 1}{2}$$
| 3* 4* 1 |
| / 2 |
S = 3* 2$$S$$ = $$3\cdot 2$$
S = 6$$S$$ = $$6$$
Atsakymas: A 6