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P=a²sinα
a]
a=6
α=30*
P=6²*1/2=18j.²
b]
a=6
α=45*
P=6²*√2/2=18√2j.²
c]
a=6
α=60*
P=6²*√3/3=12√3j.²
d]
a=6
α=135 sin135=sin (90+45)=cos45=√2/2
P=6²*√2/2=18√2 j.²
a)
b)
c)
d)