Question

triunghiul ABC drept in A are AB = 2 cm si sinC = 3/4.

Calculati:
a) BC
b)AC
c)sinB
d)ctgC
e)inaltimea corespunzatoare ipotenuzei

Answer 1

sinC=AB/BC         BC -ip.
3/4=2/BC
BC=4*2/3=8/3
AC=√BC²-AB²
AC=4√7
sinB=AC/BC
sinB=4√7/8/3
sinB=3√7/2
ctgC=AC/AB
ctgC=4√7/2
ctgC=2√7
h=AC*AB/BC