Cos
θ
=
√
5
3
or it could be cos
θ
=
√
5
−
3
Explanation:
Since sin
θ
is negative, it can be in the third or fourth quadrant
Drawing your right-angled triangle, place your
θ
in one of three corners. Your longest side will be 3 and the side opposite the
θ
will be -2. Finally, using Pythagoras theorem, your last side should be
√
5
Now, if your triangle was in the third quadrant, you would have
cos
θ
=
√
5
−
3
since cosine is negative in the third quadrant
But if your triangle was in the fourth quadrant, you would have
cos
θ
=
√
5
3
since cosine is positive in the fourth quadrant
Answer:
20/9
Step-by-step explanation:
Turn 2_2/3 into fraction.
(2 x 3) = 6 + 2 = 8: fraction- 8/3
5/6 x 8/3 = 20/9
Answer: 12
Step-by-step explanation: It’s on the same y axis and -4 to 8 is going to the right on a graph.
-Notice that dividing our numbers leaves no remainder:
1,620 ÷ 5 = 324 + 0
-1,620 has all the factors of the number 5
2.25 x 1000 = 2250.
That's how much yds of ribbons he needs.
