Question

Un pic de ajutor va rog
Calculati: a) 4sin30-6cos60+5tg 45
b) 2sin60-4cos30+3tg60

Answer 1

[tex]a)4* \frac{1}{2} -6* \frac{1}{2} +5* \frac{ \sqrt{2} }{2} =2+3+ \frac{5 \sqrt{2} }{2} =(10+5 \sqrt{2}) /2 \\ \\ b) 2* \frac{ \sqrt{3} }{2} -4* \frac{ \sqrt{3} }{2} +3* \sqrt{3} = 2\sqrt{3} [/tex]