Math, asked by missdebasmitasahoo, 1 month ago

sin20°(3-4cos^2 70°) = √3/2 prove that
please koi answer do

Answers

Answered by sk515162662

4

Answer:

sin3a=3sina-4sin³a

by using this property,

we get,sin60=√3/2

Step-by-step explanation:

i hope this is helpful for you

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