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Question
`sqrt(3)` cos2A + `sqrt(3)` sin2A is equal to ______.
Options
1
`1/sqrt(3)`
`sqrt(3)`
0
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Solution
`sqrt(3)` cos2A + `sqrt(3)` sin2A is equal to `underline(bbsqrt(3))`.
Explanation:
`sqrt(3)` cos2A + `sqrt(3)` sin2A
`sqrt(3) ((cos^2A + sin^2A))/(cos^2A + sin^2A)` = 1
`sqrt(3) xx 1 = sqrt(3)`
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