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Question

1+sin600cos6001+sin600+cos600 = ?


A

3313

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B

-3

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C

3

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D

3313

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Solution

The correct option is B

-3


Solution: Sin 600 = sin(360+240) = sin240

= sin (180+60) = -sin 60 = 32

Cos600 = cos(360+240) = cos 240

= cos(180+60) = -cos 60 = 12

Expression = 1+(32)(12)1+(32)+(12)

= 132+1213212 = 23+122312 = 3313

After rationalizing

= 3313 × 1+31+3

= 3+333313 = 232 = -3


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