In XYZ, and X = 90° , and cos Z = 7/ 25. Find sin Z and tan Y.
In right-angled triangle XYZ with X = 90o, X = 25, Z = 7, Y = \({sqrt(25^2-7^2) = sqrt(625 - 49) = sqrt(576) = 24}\)
tan Y = \(7/24\)
cos Z = \({7\over 25}. sinZ = sqrt( 1 - (cos Z)^2) = 24/25.\)
