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Question

The value of the expression cosπ33cos2π33cos4π33cos8π33cos11π33cos16π33 is


Correct Answer
A
164
Your Answer
B
132
Your Answer
C
132
Your Answer
D
3164

Solution

The correct option is A 164
cosπ33cos2π33cos4π33cos8π33cos11π33cos16π33
cosπ33cos2π33cos4π33cos8π33cos16π33cos11π33
12sin(25.π33)25sinπ33=164

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