`A+B=60 , A-B=40 , A / B=?`

If A B C and DEF are two triangles such that A B C ~= F D E a n d A B=5c m , /_B=40^0 a n d /_A=80^0dot Then, which of the following is true? D F=5c m , /_F=60^0 (b) D E=5c m , /_E=60^0 D F=5 c m , /_E=60^0 (d) D E=5c m , /_D=40^0

In a △ A B C , A = 30 ∘ , B = 60 and c=10. Find a and b.

If A B C and DEF are two triangles such that A B C\ ~= F D E\ a n d\ A B=5c m ,\ /_B=40^0\ a n d\ /_A=80^0dot Then, which of the following is true? (a)D F=5c m ,\ /_F=60^0 (b) D E=5c m ,\ /_E=60^0 (c)D F=5\ c m ,\ /_E=60^0 (d) D E=5c m ,\ /_D=40^0

In A B C , if /_A=40^0a n d\ /_B=60^0dot Determine the longest and shortest sides of the triangle.

If U = {10, 20, 30, 40, 50, 60, 70, 80, 90} universal set. and A = {10, 20, 40, 60} B = {30, 40, 60, 80} C = {10, 30, 60, 90} find A'

If U = {10, 20, 30, 40, 50, 60, 70, 80, 90} universal set. and A = {10, 20, 40, 60} B = {30, 40, 60, 80} C = {10, 30, 60, 90} find (A')'

If U = {10, 20, 30, 40, 50, 60, 70, 80, 90} universal set. and A = {10, 20, 40, 60} B = {30, 40, 60, 80} C = {10, 30, 60, 90} find (B - C)'

For sets A and B , n(A) = 20 , n(B) = 30 , n (A cup B) = 40 , n (A cap B) = 10 and n(U) = 100 then n(A' cap B') = 60 .