SAI SARDAR10 Years agothe answer is one (1).because of sec is inverse of cosine angle.in cosine angle cos 0 is one (1).and it inverse also one.so sec 0 is one.
SHAIK HAFEEZUL KAREEM10 Years ago the answer is one (1).because of sec is inverse of cosine angle.in cosine angle cos 0 is one (1).and it inverse also one.so sec 0 is one.