Question

sin(10) + sin(50) – sin(70°) = 0​

Answer 1

Answer:

=> sin(10) + sin(50) – sin(70°)

= 2 cos( 50 + 70 / 2 ) sin (50 - 70 / 2 ) + sin 10

= - 2 cos 60 × sin 10 + sin 10

= - 2 × 1 / 2 × sin 10 + sin 10

= - sin 10 + sin 10

= 0 .

⏩Hope it will help you.⏪