if x+iy=3/2+cosa+isina, then find the value of x^2+y^2
Priya , 6 Years ago
Grade 12
Vectors> if x+iy=3/2+cosa+isina, then find the val...
2 Answers
Deepak Kumar Shringi
Last Activity: 6 Years ago
Khimraj
Last Activity: 6 Years ago
x+iy= (3/2 + cosa) + isina – (1)
So,
x-iy= (3/2 + cosa) - isina -(2)
Then multiply equation (1) and (2)
x2 + y2 = (¼)*(13 + 12cosa).
Hope it clears.
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