यदि `sin A =(1)/( sqrt( 5)) ` और ` sin B =(1)/( sqrt( 10)),` तो सिद्ध कीजिए की
` " " A+B =45^(@) `

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sin^(-1)((1)/(sqrt(5)))+sin^(-1)((1)/(sqrt(10)))=(pi)/(4)

sin (A - 45 ^(@) ) = (1)/( sqrt2) (sin A - cos A)

यदि triangleABC में (If इन triangleABC), a = (1)/(sqrt(6)-sqrt(2)), b = (1)/(sqrt(6)+sqrt(2)), C = 60^(@) तो सिद्ध कीजिए कि (Prove that) c = (sqrt(4))/(2) .

If sin A=(1)/(sqrt(5)) and sin B=(1)/(sqrt(10)) ,find the values of cos A and cos B .Hence using the formula cos(A+B)=cos A cos B-sin A sin B, show that (A+B)=45^(@).

If sin A=(1)/(sqrt(10)) and sin B=(1)/(sqrt(5)), where A and B are positive acute angles,then A+B is equal to

If sin A=(2)/(sqrt(5)) and cos B=(1)/(sqrt(10)), where A and B are acute angles,then what is the value of A+B

If sin A = (1)/(sqrt3) and sin B = (1)/(sqrt5) find the value of tan ""(1)/(2) (A + B) . Cot "" (1)/(2) (A-B).

Sin (A + B) = 1/(sqrt2) Cos(A - B) = (sqrt3)/2