a. \(cos A = \frac{6000}{10,000}\)
\(A = cos^(-1)\frac{3}{5}\) or \(∠A = 53.1˚\)
b. \(sin A = \frac{6000}{10,000}\)
\(A = sin^(-1)\frac{3}{5}\) or \(∠A = 36.9˚\)
2. \(tan A = \frac{8}{6}\)
\(A = tan^(-1)\frac{4}{3}\) or \(∠A = 38.7˚\)
3. \(cos A =\frac{1}{2}\); \(∠A = 60˚\)
\(tan F = \frac{2}{3}\) or \(∠F = 33.7˚\)