Question

Pana maine!!!
Dau coroana​

Answer 1

Calculati:

• a)  4sin30° - 6cos60° + 5tg45° =?
• b)  2sin60° - 4cos30° + 3tg60° =?

Rezolvare :

• a)  $4*\frac{1}{2} -6*\frac{1}{2} +5*1=>2-3+5=> 4$

• b) $\frac{2\sqrt{3} }{2} -\frac{4\sqrt{3} }{2} +3\sqrt{3} =\frac{2\sqrt{3} }{2} -\frac{4\sqrt{3} }{2} +\frac{6\sqrt{3} }{2} =\frac{4\sqrt{3} }{2} =2\sqrt{3}$