Question

calcule el valor de la siguiente expresión (sen 45° + cos 60°)(csc 45° - tan 45°)

Answer 1

$(\frac{1}{ \sqrt{2} }+ \frac{1}{2}) ( \sqrt{2} -1)= ( \frac{2+ \sqrt{2} }{2 \sqrt{2} }) ( \sqrt{2} -1)= \frac{2 \sqrt{2}-2+2- \sqrt{2} }{2 \sqrt{2} } = \frac{1 \sqrt{2} }{2 \sqrt{2} } = \frac{1}{2}$