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2sin 30°-3tg 30°+4cos 60°
Pls help


Răspuns :

sin 30° =1/2
[tex]tg30 = \frac{1}{ \sqrt{3} } [/tex]
cos 60°=1/2

deci raspunsul e:
[tex]2 \times \frac{1}{2} - \frac{3}{ \sqrt{3} } + 4 \times \frac{1}{2} = 1 + 2 - \frac{3}{ \sqrt{3} } = 3 - \frac{ 3}{ \sqrt{3} } [/tex]