Question

sin19°×cos71°+cos19°×sin71°​

Answer 1

Step-by-step explanation:

Given that

cos 19° sin 71°

= Cos 19 °sin 71 °

= Cos ( 90° -71° ) sin 71° cos 19° sin 71°

= sin 71° sin 71°

= cos19° sin 71° = 1

since cos ( 90° - tita ) = sin tita

Cos 19° sin 71° = 1 ans .