What is the length of the wire
2 answers:
Answer:
140 is total length.
Step-by-step explanation:
If it is square, the formula for the area of the land would equal .
Or, side times side.
So, you would have to find the square root of 1225, which is 35.
Since there is four sides, 35*4 = 140
140 is the total length of the wire.
The length of each piece is 150/3 which is 46.(6)
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Answer:
Step-by-step explanation:
First thing is to remember the sin ratio. It is, by definition, the side opposite over the hypotenuse of the reference angle. In QIII the side opposite the angle is -8 which is one of the legs of a right triangle, and the hypotenuse, which is always positive, is 10. That means that if we are going to find the cosine of the angle, we need the other leg of the triangle. Using Pythagorean's Theorem, we find that
and
and
so
a = 6. But because we are QIII, that value is negative, because x is negative in QIII.
That leg happens to be the side adjacent to the angle. The cosine of the angle is the side adjacent over the hypotenuse. So now that we have the side adjacent as -6, we can say that the cosine of the angle is -6/10.