Question

cos 45º
sec 30° + cosec 30°
​

Answer 1

Step-by-step explanation:

$= \frac{1}{ \sqrt{2} } \times \frac{2}{ \sqrt{3} } + 2 \\ = \frac{2}{ \sqrt{6} } + 2 \\ = \frac{2 + 2}{ \sqrt{6} } \\ = \frac{4}{6} \\ = \frac{2}{3}$