Cindy wants to buy new jeans. She already has $40 in her savings account. If she puts $2 a week in her savings account, she want
1 answer:
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First of all, we can just ignore A, it has no effect but to vertically stretch our cosine.
If it was only , the function would be invertible as long as it's confined between
and
. Now, the argument of our cosine is not
but
. It means that it won't stop at
, but at
.
Another way to think about it, "what should i replace x with so I get inside the cosine?"
Answer:
Step-by-step explanation:
The area of a regular octahedron is given by:
area = . Let a is the length of the edge (diagonal).
area =
Given that the diagonal of the octahedron is equal to height (h) of the tetrahedron i.e.
a = h, where h is the height of the tetrahedron and a is the diagonal of the octahedron. Let the edge of the tetrrahedron be e. To find the edge of the tetrahedron, we use:
The area of a tetrahedron is given by:
area = =
The ratio of area of regular octahedron to area tetrahedron regular is given as:
Ratio =