Question

cosinverseπ/6-sininverse(1/2)
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Answer 1

The given equation can be written as

sin −1 (x 2 −6x+8.5)= 6π⇒x 2 − 6x+8.5=sin( 6π)= 2/1

⇒2x 2− 12+17=1

⇒2x 2 −12x+16=0

⇒x 2 −6x+8=0

⇒(x−2)(x−4)=0

⇒x=2 or x=4