Which of the following is/are correct?
\( \mathrm{P} \)
(1) \( \cos...
Which of the following is/are correct?
\( \mathrm{P} \)
(1) \( \cos (502 \pi)=1 \)
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(2) \( \sin (4053 \pi / 2)=1 \)
(3) \( \cos (507 \pi)=-1 \)
(4) \( \tan 7 \pi=0 \)
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