Prove that:
[tex](1 + \frac{1}{sin(\alpha )})(1 + \frac{1}{cos(\alpha )})>5[/tex]
[tex]\alpha \in (0, 90^\circ)[/tex]
teacher wrote:Prove that:
[tex](1 + \frac{1}{sin(\alpha )})(1 + \frac{1}{cos(\alpha )})>5[/tex]
[tex]\alpha \in (0, 90^\circ)[/tex]
Return to Trigonometry - sin, cos, tan, cot, arcsin, arccos, arctan, arccot
Users browsing this forum: No registered users and 1 guest