CAPE Pure Mathematics Unit 2 · May/June 2019 · Paper 1 · Question Q4
The value of \left[\cos\frac{\pi}{4} + i\sin\frac{\pi}{4}\right]^4 is
- (A)
-4 - (B)
-1 - (C)
1 - (D)
4
The answer is shown once you've answered.
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