Question

Mohon bantuannya yaa

Answer 1

A = 9
b = 6
c .... ?
c = √ 9 kuadrat + 6 kuadrat
= √ 81+36
= √117
= √ 9 x 13
= 3√13

sin A = a/c
= 9/ 3√13
= (9/ 3√13 )x ( 3√13 / 3 √13)
= 27√13 / 117
= 3/13 √13....

jawabannya C