Question

calculate the value of sin10

Answer 1

For sin 10°,

Let A = 10°

This makes, 3A = 30°

Now if we take sin both sides, we have

sin 3A = sin 30°

sin3A = 0.5, now we know,

sin 3A = 3sinA - 4sin³A = 0.5

This is a cubic equation from which u can calculate the value of sinA or sin10° = 0.173