C-09-Q137mediumsingle_mcqcot45∘=?\cot 45^\circ = ?cot45∘=?a000b111c3\sqrt{3}3dundefinedব্যাখ্যাCotangent is the reciprocal of tangent, and since tan45∘=1\tan 45^\circ = 1tan45∘=1, cot45∘=1\cot 45^\circ = 1cot45∘=1.