What is the value of 31*cos(30)-i25.6*(-0.69913)*sin(30) ?

The value of 31*cos(30)-i25.6*(-0.69913)*sin(30) is 26.84678…+8.948864i

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31cos(30)-i25.6(-0.69913)*sin(30)

31 \cdot cos (3 0^{\circ}) - i 25.6 \cdot (- 0.69913) \cdot sin (3 0^{\circ})

26.84678 \dots + 8.948864 i

Solution steps

31 cos (3 0^{\circ}) - i 25.6 (- 0.69913) sin (3 0^{\circ})

Refine to a decimal form

= 26.84678 \dots + 8.948864 i

arctan (\frac{1.3}{7.7})

\frac{1}{cos ( 1 5 ^{\circ} )}

arctan (43)

sin (\frac{5}{26}) cos (\frac{1}{26})

\frac{4 cos ( 33 0 ^{\circ} ) + 2 sin ( 6 0 ^{\circ} )}{3}

What is the value of 31*cos(30)-i25.6*(-0.69913)*sin(30) ?
The value of 31*cos(30)-i25.6*(-0.69913)*sin(30) is 26.84678…+8.948864i