tan V= 5/12 ; 0 less than and equal to V less than and equal to pie/2
tan ^2 V = 25/144
sec^2V = 1 + tan^2V
= 1 + (25/144) = 169/144
cos^2V = 144/169 , cos A = 1/sec A
sin^2V = 1 - cos^2V
= 1 - 144/169 = 25/169
sinV = 5/13 , sin < pie/2 is positive
thank you. it helped a lot
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