Question

Evaluate
find the value of
(cos 0° + sin 45° + sin 30°)(sin 90° - cos 45º + cos 60°)

​

Answer 1

cos 0°=1

sin 45°=1/√2

sin 30°=1/2

sin90°=1

cos 45°=1/√2

cos 60=1/2

therefore,

putting the values we get

Answer= 7/4