Mathematic Problems
343. példa

Calculate the area of the parallelogram if its altitudes are 3 and 23 cm, and the angle between tham is 60°!

A=12 cm2
sin α=hba=hab
sin 60°=23a=3b=32
23a=32
2a=12
a2=21
a=4
T=a·ha=3·4
T=12
x
P=12 cm2
P=12 cm2