(i) False because tanα = perpendicular/base and perpendicular and base could be 5, 12 which leads to tanα = 5/12
(ii)True because sec A is the reciprocal of cos A, and the cos A is always between -1 and 1, this implies that sec A cannot be between -1 and 1, so 12/5 is possible
(iii) False because cos A is the abbreviation of cosine A
(iv) false because cot A is a single term not the product of cot and A
(v) False because the maximum value of sin α = 1 (sin90 = 1), therefore it cannot exceed 1.