Forty-five of the 80 students in the club were girls what was the ratio of boys to girls in the club
1 answer:
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Answer:
t=0
Step-by-step explanation:
r=<+1,
>
by differentiating the r vector component by component
r' = <2at, 1>
Two vector are orthogonal when the dot product between them is zero, so:
r'·r=0
<+1,
>·<2at, 1>=2
+2at+t=0
common factor
t(+2a+1)=0
Then, the only real value for t is zero.
-> t=0
The complete question is missing, so i have attached it.
Answer:
x = 9(sin 42)/(sin 29)
Step-by-step explanation:
We want to find an expression for x.
From the attached image, we can see a triangle with 2 angles given and 2 sides to be 9 and x respectively.
Now, the law of sines says that;
A/sin A = B/sinB = C/sin C
So applying it to this question, we have;
x/sin 42 = 9/sin 29
Thus,
x = 9(sin 42)/(sin 29)
