Question

In Triangle ABC, Angle B=90*, SinC=3/5. AB=9cm. Find BC.

Answer 1

can you drawing it ? this will help you sure

Answer 2

@jhonyy9 - I have it on my paper...... should i draw it here?

Answer 3

yes please

Answer 4

just for i can explaning to you for you can understanding it easy

Answer 5

Okay? @jhonyy9

Answer 6

can you writing here what mean sinC ,sinus of angle C , using proportionality of sides ?

Answer 7

SinC=AB/BC?

Answer 8

exactly

so than now just you need rewriting it and let be equale by 3/5

and from this you njust need calculi BC

ok ?

Answer 9

???

Answer 10

Given AB is 9cm but now AB will be 3 ! Thats wer i am confused

Answer 11

so
let be BC = x

3/5 = 9/x so than cros multiplie

3x=45 divide both sides by 3

x= 15

right ?

Answer 12

Ya!

Answer 13

yw

good luck

Answer 14

Thanks!! x= 15cm right?

Answer 15

yes

Answer 16

Thanks a lot! @jhonyy9 !!

Answer 17

yw