What is the answer for this question? i will mark as brainliest

Mathematics

1 answer:

anzhelika [568]2 years ago

4 0

Answer:

45 degrees, 135 degrees, 225 degrees, 315 degrees

Step-by-step explanation:

x = 45 degrees + k * 90 degrees

t^3-4t^2-.5t+2=0

t = 4

t = 2^.5/2

cosx=2^.5/2

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