Lutasin ang 75cos(20)-50cos(30)))

$$75 \cos ( 20)-50 \cos ( 30) ) )$$

I-evaluate

$$70.47694655894313-25\sqrt{3}\approx 27.17567637$$

Mga Hakbang ng Solution

Evaluate trigonometric functions in the problem

$$75 \cdot 0.9396926207859084 - 50 \cos(30)$$

I-multiply ang 75 at 0.9396926207859084 para makuha ang 70.47694655894313.

$$70.47694655894313-50\cos(30)$$

Kunin ang halaga ng \cos(30) mula sa talahanayan ng trigonometric values.

$$70.47694655894313-50\times \frac{\sqrt{3}}{2}$$

Kanselahin ang greatest common factor na 2 sa 50 at 2.

$$70.47694655894313-25\sqrt{3}$$