Answer:
3/20
Step-by-step explanation:
3/5*1/4=3/20
We know that
applying the law of cosines
a² = b²+ c²<span> – 2*b*c*cos(A)
</span>
in this problem
a=?
b=20
c=9
A=90°
so
a² = b²+ c² – 2*b*c*cos(A)
but
cos (A)=0
a² = b²+ c²-----> 20²+9²----> a²=400+81----> a²=481-----> a=√481
a=21.93-----> a=22
the answer is
22
Answer:
-1, -1.1, 0.9, 1
Step-by-step explanation:
Answer:
Step-by-step explanation:
the total angle is 89 and we are also give two of the parts
89-30-44=15°
