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CBSE Class 11-commerce Answered

if the polar form of complex no. is given by 4(cos pie+i sin pie) then what is the complex no.? pls explain with reason
Asked by deepakagarwal1024 | 21 Jun, 2018, 07:40: PM
answered-by-expert Expert Answer
z = 4(cos ∏ + i sin ∏) 
Comparing with z = r(cosθ + isinθ)
r = 4 and θ = ∏
x = rcosθ = 4cos∏ = -4
y = rsinθ = 4sin∏ = 0
z = -4 + 0i = -4
Answered by Sneha shidid | 22 Jun, 2018, 09:40: AM

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