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3 years ago

For the law of cosines How am I supposed to know if I’m using SAS or SSS

Mathematics

1 answer:

seropon [69]3 years ago

4 0

Answer:

SSS congruency is when you know that the two triangle you want to compare's sides have the same length. Since they have the same length, they are congruent. SAS congruency stands for "side, angle, side" and means that we have two triangles where we know two sides and the included angle are equal.

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Let a and b be any two integers. Show that the following statement is false: If 3|(a+b),then 3|(a−b).Hint. To show that the stat

Phoenix [80]

Answer with Step-by-step explanation:

Let a and b are two integers.

We have to show that

if 3\a+b then 3\a-b is false.

In order to prove that given statement is false we prove this with the help of example

Suppose we have two integers a=2 and b=4

if 3\2+4

3\6=2

2-4=-2

But 3 does not divide -2.

Therefore, the given statement is false.

Hence, proved.

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3 years ago

A surveyer wants to find the distance from points A and B and to an inaccessible point C. These three points form a triangle. Be

Vinil7 [7]

Answer:

42.8°

Step-by-step explanation:

The sine rule states that for a triangle with lengths of a, b and c and the corresponding angles which are opposite the sides as A, B and C, then the following rule holds:

$\frac{a}{sin(A)}=\frac{b}{sin(B)} =\frac{c}{sin(C)}$

Given that points A, B and C forms a triangle with angle A = 65°, distance from A-to-C = 90 m and the distance from B to C = 120 m.

The distance from A to C is the side opposite to angle B. Hence let b = distance from A to C = 90 m.

The distance from B to C is the side opposite to angle A. Hence let a = distance from B to C = 120 m.

Therefore using sine rule:

$\frac{a}{sin(A)}=\frac{b}{sin(B)} \\\\\frac{120}{sin(65)}=\frac{90}{sin(B)} \\\\sin(B)=\frac{90*sin(65)}{120} \\\\sin(B) =0.6797\\\\B=sin^{-1}(0.6797)\\\\B=42.8^o$

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2 years ago

Look at the photo pick A B C D either one explanation not needed thank you! <3

hjlf

Answer:

Step-by-step explanation:

It's A

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3 years ago

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Selena has $10 in her bank account and adds $10 of her allowance each month. Cooper has $100 in his account and spends $20 per m

maxonik [38]

Answer:

They will never have the same amount.

Step-by-step explanation:

Unless you use a number as a point "." then they will never have the same number. Sorry if this doesn't help you

7 0

3 years ago

Read 2 more answers

i need the answer and if possible, can you show your work? i would like to know the steps. Please and thanks you

lisov135 [29]

Answer: The volume would be 61.261.

Step-by-step explanation: To find the volume of a sector of a cylinder use the following formula and fill in the variables with the appropriate data. V = π r² h * Θ / 360°

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3 years ago