Question

In a right angled triangle base BC=15cm and sinB=4/5 then what is the length of hypotenuse AB​

Answer 1

Answer:

There fore the length of hypotunse AB is 15cm

Answer 2

Answer:

In right triangle ABC tan C=4/3 . or AB/BC= 4/3

AB= 4.BC/3

In right angled triangle ABC :-

(AB)^2+(BC)^2=(AC)^2 , on putting AB=4.BC/3 and AC=15cm.

(4BC/3)^2+(BC)^2=(15)^2

16.(BC^2)/9 +BC^2 =225

25.(BC^2)/9=225

BC^2=225×9/25= 81

BC= 9 cms  

But AB=4.BC/3=4×9/3 =4×3 =12 cms