" If "cos A=-(3)/(5),sin B=(7)/(25)" and "90^(@)

If A>0^@ , B<90^@ , such that cos A=(5)/(13) and sin B=(4)/(5) , then the value of sin(A-B)

" If "cos theta=(-7)/(25)" and ",theta in((5 pi)/(2),3 pi)" then "sin(theta/2) =(-4)/(5), cos(theta/2)=(3)/(5),sin(theta/2)=(-3)/(5), cos(theta/2)=(-4)/(5)

270^(@)

If cos(A-B)=(3)/(5) andtan Atan B=2, then cos A cos B=(1)/(5)(b)sin A sin B=-(2)/(5)cos A cos B=-(1)/(5)(d)sin A sin B=-(1)/(5)

If sin theta=(3)/(5) and 0

If sin A=(3)/(5) and 0^(@)

Solution of Triangle in different cases :- (5) When b>c sin B;c c;B=90^(@) (7) b>c;B=90^(@)(8)b<=c and B=90^(@)

Evaluate the equation ;- cos 90^(@) sin 0^(@) - sin 0^(@) cos 90^(@) .

In triangle ABC if (sin A)/(7)=(sin B)/(6)=(sin C)/(5) show that cos A:cos B:cos C=7:19:25

Find the values of all the the T-Rations if :- (a) cos thata =(7)/(25)" "(b) sin theta =(5)/(13)