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" 12."cos(6 pi)/(65)+2tan^(-1)(1)/(5)=si...

" 12."cos(6 pi)/(65)+2tan^(-1)(1)/(5)=sin^(4)(3)/(5)

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cos^(-1)((63)/(65))+2tan^(-1)((1)/(5))=sin^(-1)(3/5)

Prove that: "cos"^(-1)63/65+2"tan"^(-1)1/5="sin"^(-1)3/5

show that sin ^(-1)""(4)/(5) +sin ^(-1)""(5)/(13) +sin ^(-1)""(16)/(65) =(pi)/(2)

cos^(-1) (63/65) + 2tan^(-1) (1/5)= sin^(1) (_______).

Prove that sin^(-1)((4)/(5))+tan^(-1)((5)/(12))+cos^(-1)((63)/(65))=(pi)/(2)

If 2"tan"^(-1)(1)/(5)-"sin"^(-1)(3)/(5)= -"cos"^(-1)(9lambda)/(65) , then lambda=

If 2"tan"^(-1)(1)/(5)-"sin"^(-1)(3)/(5)= -"cos"^(-1)(9lambda)/(65) , then lambda=

Prove that: sin^(-1)(-(4)/(5))=tan^(-1)(-(4)/(3))=co^(-1)(-(3)/(5))-pi

sin^(2)(pi)/(6)+cos^(2)(pi)/(3)-tan^(2)-(1)/(2)(pi)/(4)=-(1)/(2)

Prove that "sin"^(-1)(4)/(5) +"sin"^(-1)(5)/(13) +"sin"^(-1)(16)/(65)=(pi)/(2) .