Q)Write the following expression in terms of cosine both in a simplified form?

- Is my attempt Correct (Wondering))Attempt

Thank you

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- March 11th 2009, 11:09 AMmj.alawamiWrite the expressions in terms of cosine?
Q)Write the following expression in terms of cosine both in a simplified form?

- Is my attempt Correct (Wondering))**Attempt**

Thank you - March 11th 2009, 11:19 AMe^(i*pi)
- March 11th 2009, 11:26 AMmj.alawami
- March 11th 2009, 12:27 PMe^(i*pi)