Question

Exercitiile 12 si 13

Answer 1

12.

$( { \frac{1}{2} })^{2} + ( { \frac{ \sqrt{3} }{2} }^{2} ) = \frac{1}{4} + \frac{3}{4} = \frac{4}{4} = 1$

13.

$\frac{ \sqrt{2} }{2} + \frac{ \sqrt{2} }{2} = \frac{2 \sqrt{2} }{2} = \sqrt{2}$