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Popular >

simplify 3cos(npi)

Solution

simplify

3 cos (nπ)

Solution

3 (- 1)^{n}

Solution steps

3 cos (nπ)

Use the basic trigonometric identity:

cos (nπ) = (- 1)^{n}

= 3 (- 1)^{n}

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Frequently Asked Questions (FAQ)

What is 3cos(npi) ?
The solution to 3cos(npi) is 3(-1)^n