P: Solve each to four decimal places (x real and 0 in degrees)

Question

P: Solve each to four decimal places (x real and 0  in degrees)

5 cos x - 2 = 0,  0<orequalto x < 2pi

Steve · Answer

cosx = 2/5
x in QI or QIV
x = 21.8014°
x = 360-21.8014 = 338.1986°

If you want answers in °, you should express the domain in °, not radians.

You can easily look up special characters, so you can copy/paste θ, and not use 0.

john · Answer

those are 0 in the question not θ

Steve · Answer

oops. my bad.

fatma zenan · Answer

x.(x+2)

hkuku · Answer

5x+3).(x+1)=?

Steve · Answer

(5x+3)(x+1) = 5x^2 + (5+3)x + 3 = 5x^2 + 8x + 3 Just like 53*11 = 5*10^2 + (5+3)*10 + 3 = 500+80+3 = 583