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atroni [7]
3 years ago
11

I failed to use the cos and sin rule ​

Mathematics
1 answer:
statuscvo [17]3 years ago
7 0
Cos = adjacent side / hypotenuse

Sin = opposite side / hypotenuse
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Venn diagrams: unions, intersections, and complements<br><br><br> Attached is the photo references
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4, 8

Step-by-step explanation:

D iswholly part of B. so B intersect D is D

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E and D

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What is the largest integer n such that (n^2-38) / (n +1) is an integer?
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a. 36

Step-by-step explanation:

for (n^2-38)/(n+1) to be an integer, n+1 must completely divide, n^2-38.

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option a n=36 sutisfies the above condition.

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A wire is ⅝ meters long. it is divided into 2 equal parts. what is the length of each part​
mote1985 [20]

Answer:

5/16m long.

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7 0
2 years ago
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Q.23 Prove that: (sin4A - cos4A + 1) = 2sin2A
FrozenT [24]

Answer:

Step-by-step explanation:

I think you have the question incomplete, and that this is the complete question

sin^4a + cos^4a = 1 - 2sin^2a.cos^2a

To do this, we can start my mirroring the equation.

x² + y² = (x + y)² - 2xy,

This helps us break down the power from 4 to 2, so that we have

(sin²a)² + (cos²a)² = (sin²a + cos²a) ² - 2(sin²a) (cos²a)

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On expanding the power and the brackets, we find that we have the equation proved.

sin^4a + cos^4a = 1 - 2sin^2a.cos^2a

4 0
3 years ago
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