Teaching AP DSC School Assistant 2025 Mock Test Series Mathematics Trigonometry Trigonometric Functions
If \(u = \log \left\lfloor {\tan \left( {\frac{\pi }{4} + \frac{\theta }{2}} \right)} \right\rfloor\), then cosh u is
1
sec θ
2
sin θ
3
cos θ
4
None of these