Question

Se considera triunghiul ABC, masura unghiului (A)=90. Daca AB=9cm si BC=15 cm , calculati AC , sin B, cos B, tg C si ctg de C

Answer 1

AC=√(15x15-9x9)=√144=12
sinB=12/15=4/5=0,8
cosB=9/15=3/5=0,6
tgC=9/12=3/4=0,75
ctgC=12/9=4/3=1,33