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Express 
z_(1)=-14+14 i in polar form.
Express your answer in exact terms, using degrees, where your angle is between 
0^(@) and 
360^(@), inclusive.

z_(1)=

Express z1=14+14i z_{1}=-14+14 i in polar form.\newlineExpress your answer in exact terms, using degrees, where your angle is between 0 0^{\circ} and 360 360^{\circ} , inclusive.\newlinez1= z_{1}=

Full solution

Q. Express z1=14+14i z_{1}=-14+14 i in polar form.\newlineExpress your answer in exact terms, using degrees, where your angle is between 0 0^{\circ} and 360 360^{\circ} , inclusive.\newlinez1= z_{1}=
  1. Calculate Magnitude: To express a complex number in polar form, we need to find its magnitude rr and angle θ\theta. The magnitude is found using the formula r=a2+b2r = \sqrt{a^2 + b^2}, where aa is the real part and bb is the imaginary part of the complex number.\newlineFor z1=14+14iz_{1} = -14 + 14i, we have a=14a = -14 and b=14b = 14.\newlineNow we calculate the magnitude: r=(14)2+(14)2=196+196=392=142r = \sqrt{(-14)^2 + (14)^2} = \sqrt{196 + 196} = \sqrt{392} = 14\sqrt{2}.
  2. Find Angle: Next, we need to find the angle θ\theta. The angle is determined by the arctan function, θ=arctan(b/a)\theta = \text{arctan}(b/a). However, since the complex number is in the second quadrant (a is negative and b is positive), we need to add 180180 degrees to the angle found by arctan(b/a)\text{arctan}(b/a) to get the correct angle in the range of 00 to 360360 degrees.\newlineθ=arctan(14/14)+180=arctan(1)+180\theta = \text{arctan}(14 / -14) + 180^\circ = \text{arctan}(-1) + 180^\circ.\newlineWe know that arctan(1)\text{arctan}(-1) corresponds to 45-45 degrees (or 315315 degrees if we want a positive angle), so θ=arctan(b/a)\theta = \text{arctan}(b/a)00.
  3. Write in Polar Form: Now we can write the complex number in polar form. The polar form is given by z=r(cos(θ)+isin(θ))z = r(\cos(\theta) + i\sin(\theta)), where rr is the magnitude and θ\theta is the angle.\newlineFor z1z_{1}, the polar form is z1=142(cos(135°)+isin(135°))z_{1} = 14\sqrt{2}(\cos(135°) + i\sin(135°)).

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