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Question

The value of the expression 5sin230+cos245+4tan2602sin30cos60+tan45 is

A
4
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B
9
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C
5312
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D
556
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Solution

The correct option is C 556
5sin230+cos245+4tan2602sin30cos60+tan45

=5(12)2+(12)2+4×(3)22×12×12+1

=54+12+4×312+1

=74+1232

=55432

=556

Option D is correct.

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