Answer:
Help what?
Step-by-step explanation:
Answer:
Agree.
Step-by-step explanation:
1. (5^r)^t can be represented simply as 5^rt.
2. when r as negative integer, t as positive integer, rt is always a negative integer
3. when ever the indices rt is negative, the number 5^rt will be less than 1, thus cannot be a whole number for sure.
This triangle would be isosceles since two of the sides have the same length.
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Explanation:
Answer:
See Below.
Step-by-step explanation:
We want to show that the Law of Cosines simplifies to the Pythagorean Theorem when the contained angle between the two known sides is 90°.
The Law of Cosines is given by:

Where <em>a </em>and <em>b</em> are the two known sides, and C is the angle between them.
If C is 90° then we will have:

Recall that the cos(90°)=0. Hence:

Simplify:

So, we acquire the Pythagorean Theorem as desired.