Trigonometry Examples

$- \frac{\sqrt{3}}{4} \cdot \frac{\sqrt{13}}{4}$

Step 1

Multiply $\frac{\sqrt{13}}{4}$ by $\frac{\sqrt{3}}{4}$ .

$- \frac{\sqrt{13} \sqrt{3}}{4 \cdot 4}$

Step 2

Combine using the product rule for radicals.

$- \frac{\sqrt{13 \cdot 3}}{4 \cdot 4}$

Step 3

Multiply $13$ by $3$ .

$- \frac{\sqrt{39}}{4 \cdot 4}$

Step 4

Multiply $4$ by $4$ .

$- \frac{\sqrt{39}}{16}$

Step 5

The result can be shown in multiple forms.

Exact Form:

$- \frac{\sqrt{39}}{16}$

Decimal Form:

$- 0.39031237 \dots$