Question

sinx=sin(x+2); 0 15 years ago

Answer 1

it's not pie, it's pi

Answer 2

\[\sin A - \sin B = 2 \cos \frac{A+B}{2} \sin \frac{A-B}{2}\]

Answer 3

In this case A = x, B = x + 2. Put the relationship to be 0 and solve the final trigonometric equation