Question

sin 50 degree +sin 50 degree + sin 40 degree equals to root 2 into sin 85 degree​

Answer 1

√2 sin(85)= √2 sin(45+40)

= √2 sin(45)cos40 + √2cos (45)sin(40)

= cos (90-50) + sin(40)

= sin(50) + sin(40)

Answer 2

Answer:

hope it will be helpful..