Given: Z= sqrt. of 2(cos(225degrees) +i sin(225degrees))^7 This the formula I'm using Z^n= r^n(cos n deita + i sin n deita) I tried to follow the formula but i keep getting it wrong.
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Originally Posted by Cyberman86 Given: Z= sqrt. of 2(cos(225degrees) +i sin(225degrees))^7 This the formula I'm using Z^n= r^n(cos n deita + i sin n deita) I tried to follow the formula but i keep getting it wrong. The formula is correct. Note that so this tell us that and are coterminal angles
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