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Question

3tan230+43cos2302sin24513sin260 is equal to__________________.

A
14
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B
34
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C
1
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D
0
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Solution

The correct option is B 34
Given

3tan230+43cos2302sin24513sin260

=3(13)2+43(32)22(12)213(32)2

=1+1114

=34

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