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Q15 use good hand writing. Write the answer down in paper. and also Show your work for The answer Find the exact value of cos

Q15 use good hand writing. Write the answer down in paper. and also Show your work for The answer

Find the exact value of cos 22.5 using the half-angle identity. Choose the exact value of cos 22.50. O A. 12 + 1/2 O B. 12 - 12 O C. 12+ 12 OD

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