Question

prove that sinº sin (60° – tita) sin (60° +tita) = 1/4 sin 3tita, hence find the value of sin 20º.sin40. sin 80°.
​

Answer 1

Answer:

hii friend, here is the required answer..... sin20° sin40° sin60° sin80° =>. sin 60° sin20° sin40° sin80° =>. √3/2 sin 20° ...

Step-by-step explanation:

Mark me and follow me