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solong [7]
3 years ago
14

What is cos 45 degrees?

Mathematics
2 answers:
zavuch27 [327]3 years ago
5 0
The answer is E. Please see photos below. I hope this helps!

Elis [28]3 years ago
3 0
The answer to your question is E. 1/the square root of 2
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What is the length of the diagonal of a rectangle that is 12 inches long and 6 inches wide?​
lakkis [162]
To find the diagonal of the rectangle we have to use Pythagorean theorem!

Pythagorean theorem is used to find the length of a missing angle such as the hypotenuse or the sides a and b.

Steps to solve:

1. 12 in is the length or the base of the right triangle, and 6 in is the wide or the side a.
2. Now use the formula: a^2+b^2=c^2, and plug in the numbers!
3. 6^2+12^2=c^2, now just solve the squared numbers.
4. 36+144=c^2
5. 180=c^2
6. Find the square root of 180.

And that is you answer!
If helped mark me the brainiest!!
4 0
3 years ago
Find the area and perimeter
artcher [175]

Answer:

Step-by-step explanation:

Add all 4 sides to get perimeter so the first one is 9+9+2+2=22cm

the area is length x width so the first one is 9 x 2 =18cm ^2

3 0
3 years ago
HELP ASAP!! WILL GIVE BRAINLIEST!! ANSWER ALL PLEASE!!
agasfer [191]

Answer:

B) and A)

Step-by-step explanation:

6 0
3 years ago
The first term of a geometric sequence is 7, and the ratio (multiplier) is 3. what is the sum of the first 5 terms of the sequen
Anni [7]
Hello,

1)
a_{1}=7
a_{2}=7*3
a_{3}=7*3^2

a_{n}=7*3^{n-1}

s=a_{1}+a_{2}+a_{3}+a_{4}+a_{5}=7*(1+3^1+3^2+3^3+3^4)
=7*\frac{3^{5}-1}{3-1}
=7*242/2=847

2)
b_{8}=6*8^{8-1}=12582912




















4 0
4 years ago
Assume that there are two pairs of congruent triangles in the diagram
pychu [463]
False Happy Thanksgiving :)
3 0
3 years ago
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