Question

exact measures

Answer 1

how did u get b as that?

Answer 2

try to find sin A
you won't find b there at all :P

Answer 3

use tangent to find side b

Answer 4

doesn't matter which angle you pick you'll get it right either way

Answer 5

so there's my mistake,.. tan82=5/b

Answer 6

just remember tangent= opp/adj

Answer 7

yep, thats correct
find b from there

Answer 8

b=5tan(82)

Answer 9

so b = 5/tan(82)

Answer 10

remember \[\rm sin \rm \theta = \frac{ opposite }{ hypotenuse }~~~~ \cos \theta = \frac{ adjacent }{ hypotenuse } ~~\tan \theta = \frac{ opposite }{ adjacent }\]

if you want to find hypotenuse then you should use sin A =opposite/hyp