Question

Write as sine, cosine, or tangent of an angle sin(pi/3) cos(pi/7) - sin(pi/7) cos(pi/3). And if you can, please explain how you got this

Answer 1

use this formula :-

\(\large \sin (A-B) = \sin (A) \cos (B) - \cos (A) \sin (B)\)

Answer 2

ok so i did sin(a-b) as sin(pi/3)-(pi/7) which gave me 4pi/21. Is that the answer? Please excuse my stupidity

Answer 3

thats is \(\large \color{red}{\checkmark}\)

= sin(pi/3-pi/7)
= sin(4pi/21)

Answer 4

oh my godness thank you so much!!

Answer 5

np... u wlc (: good work !