Question

if triangle abc angle b=90 BC=5cm , ac-ab=1cm. evaluate: 1+sinc/cosc

Answer 1

Answer: 5

Step-by-step explanation: since ac - ab =1

           ac = 1+ab

so according to Pythagoras theorem,

 ac square = ab square + bc square

but since ac = 1+ab

so we can write

(1+ab)^2 + (ab)^2 + (5)^2

= 1+2ab=ab^2 = ab^2 = 25

= 1+2ab=25

=  2ab=24

=  ab=12 cm

since ac=1+ab,

ac=13 cm

1+sinc/cosc

=1+12/13/5/13

= (13+12)/5

= 25/5

=5

therefore ans = 5

PLEASE MARK BRAINLIEST