Tan 90º, sin 60º, cot 30°, sec(90° - ø), cos²ø + sin²ø =, sec²ø -1 =, 1 + cot²ø =, tan²ø +1 =, tan ø = sinø/ ............, cosecø = 1/ .........., If cos ø = 12/13, find tanø, cot (90° - ø) =, If sin (A+B) = 1/2 , and cos (A - B) = 1/2 , find the values of A and B., If 3cot A = 4, find 1- sin²ø., sin ø = 4/3, true/false, sin 2A = 2 sin A is true when A =, 1 - tan² 45°/ 1 + tan² 45° =, sin 18°/cos 72° =, If tan 2A = cot (A - 18°), find A., 7 cosec²ø - 7 cot²ø =

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