Answer:
Sin(t) =
and 
Step-by-step explanation:
The secant function is the reciprocal function of the cosine function. Therefore, given that
then, if
then
.
On the other hand, if cos (t) = 1/2 ⇒ t = ±
Then, the sin(
) = 
Answer:
For example 
Step-by-step explanation:
A non-unit fraction is a fraction of which the numerator is not equal to one. Additionally, the question does not state to pick three different ones and thus you can pick any fraction that when multiplied by three (since you take three fractions together) add up to a whole number (I'm picking the whole number to be one here just to make it simple), where the numerator is not equal to one of course.
For example:
, because 3·
=
= 1
Infinitely many solutions can be found: for example 
Answer:
Serena will have $9.75 left after her purchases.
Step-by-step explanation:
5 packages of buns= 3.85x5= 19.25
5 packages of hotdogs= 4.20x5= 21
19.25+21= 40.25
50-40.25= 9.75
Y is between X and Z
The value of d=2 and the value of YZ = 16
Given :
Y is between X and Z.
XY = 11d, YZ = 9d – 2, XZ = 5d + 28
We need to find the value of d
we know that Y is between X and Z
So, 
Replace the given expression and solve for d

The value of d=2
Now we find out YZ using d=2

The value of YZ is 16
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