Ex 3.2, 9
Last updated at March 8, 2017 by Teachoo
Transcript
Ex 3.2,9 Find the value of the trigonometric function sin ( โ 11"ฯ" /3) sin ((โ11 ๐)/3) = โ sin ((11 ๐)/3) = โ sin ("3 " 2/3 " ฯ" ) = โ sin ( 4ฯ โ 1/3 ฯ ) = โ sin ((โ 1)/3 " ฯ" ) = โ ("โ sin " (1/3 " ฯ" )) = sin (1/3 " ฯ" ) = sin 60ยฐ = โ3/2
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