Math, asked by rakeshsoni123bowih8o, 1 year ago

Sin20sin40+sin60sin80


aastha15das: how is my answer

Answers

Answered by aastha15das
2
sin20. sin 40. sin60. sin80

=> sin60[sin20.sin40.sin80]

=>√3/2[sin20.sin(60-20).sin(60+20)]

=>√3/2[sin 3(20)/4]

=>√3/2[sin 60/4]

=>√3/2[√3/2*4]

=>√3/2*√3/8

=3/16
 
hope it's help u

Answered by Inflameroftheancient
4

DEAR STUDENT,




Kindly check the attached papers for a detailed solution along with step by step elaboration to reach our final solution that is our final desired or required answer to this query that is completely proved.




\boxed{\bf{\underline{L.H.S. = R.H.S.}}}




Which is the required proof or solution process for this type of query.




Hope this helps you and solves your doubts for applying trigonometric identifies to reach a proper solution or a proof!!!!!


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