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Q.

sin36°cos54°tan18°cot72°=

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a

2

b

1

c

0

d

-1

answer is A.

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Detailed Solution

sin36°cos54°tan18°cot72°

=sin36°cos(90°36°)tan18°cot(90°18°)

=sin36°sin36°tan18°tan18°

=11=0

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