`(cos^(-1)(41/49))/(sin^(-1)(2/7))`

cos{cos^(-1)(-1/7)+sin^(-1)(-1/7)} =

The value of sin[cos^(-1)(-(1)/(7))+sin^(-1)(-(1)/(7))] is

The value of cos15^(@)cos(7(1)/(2))^(@)sin(7(1)/(2))^(@) is

Prove the following identities: (sin+cos A)/(sin A-cos A)+(sin-cos A)/(sin A+cos A)=(2)/(sin^(2)A-cos^(2)A)=(2)/(2sin^(2)A-1)=(2)/(1-2cos^(2)A)

(cos^(-1)(sin((7 pi)/6))

((sin49^(@))/(cos41^(@))-(cos17^(@))/(sin73^(@)))=?

The value of sin^(6)((pi)/(49))+cos^(6)((pi)/(49))-1+3sin^(2)((pi)/(49))cos^(2)((pi)/(49)) is equal to

The value of cos15^(@)cos7(1^(@))/(2)sin7(1^(@))/(2) is

The value of cos 15^(@) cos 7 ((1)/(2))^(@)sin 7 ((1)/(2))^(@) is

cos^(-1)(sin((pi)/(7)))