The ratio of the sides AB : BC : AC is equal to
Verify each of the following :
(i) 37×−59=−59×37
(ii) −87×139=139×−87
(iii) −125×7−36=7−36×−125
(iv) −8×−1312=−1312×(−8)
Verify the following
(i) −125+27=27+−125
(ii) −58+−913=−913+−58
(iii) 3+−712=−712+3
(iv) 2−7+12−35=12−35+2−7
In figure, AC = 13 cm, BC = 12 cm, then sec θ equals :