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" 9."sin^(-1)(cos x)...

" 9."sin^(-1)(cos x)

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If cos (2 sin^(-1) x) = (1)/(9) , then find the value of x

If cos (2 sin^(-1) x) = (1)/(9) , then find the value of x

If cos (2 sin^(-1) x) = (1)/(9) , then find the value of x

Solve: cos(2"sin"^(-1)x)= 1/9

The value of (cos 9^(@) +sin 9^(@))/(cos 9^(@) -sin 9^(@)) is equal to-

(cos 9^(@) +sin 9^(@))/(cos 9^(@) -sin 9^(@)) is equal to :

(cos 9^(@) + sin 9^(@))/(cos 9^(@) - sin 9^(@)) equals

Prove that : (cos 9x - cos 5x)/(sin 17x -sin 3x)=- (sin 2x)/(cos 10x) .

Prove that: (cos9x-cos5x)/(sin 17 x-sin3x)=\ -(sin2x)/(cos 10 x)

(cos 9x - cos 5x)/(sin 17x - sin 3x) = (-sin 2x)/(cos 10x)