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Hunter-Best [27]
3 years ago
5

Someone PLEASE HELP ME with this question i think its A

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0

Answer:

  your choice is correct

Step-by-step explanation:

If ΔABC is to be similar to ΔDEF, then we must have congruent corresponding angles: ∠A ≅ ∠D. The measure of ∠A is said to be 34°, so ∠D must have the same measure:

  ∠D = 34°

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Dillon says that 4b and -2b are not like terms
olganol [36]
He is wrong because as long as they have the same terms/ variables behind the number it doesn’t matter about if it is positive or negative
4 0
3 years ago
The cosine of 23° is equivalent to the sine of what angle
Archy [21]

Answer:

So 67 degrees is one value that we can take the sine of such that is equal to cos(23 degrees).

(There are more values since we can go around the circle from 67 degrees numerous times.)

Step-by-step explanation:

You can use a co-function identity.

The co-function of sine is cosine just like the co-function of cosine is sine.

Notice that cosine is co-(sine).

Anyways co-functions have this identity:

\cos(90^\circ-x)=\sin(x)

or

\sin(90^\circ-x)=\cos(x)

You can prove those drawing a right triangle.

I drew a triangle in my picture just so I can have something to reference proving both of the identities I just wrote:

The sum of the angles is 180.

So 90+x+(missing angle)=180.

Let's solve for the missing angle.

Subtract 90 on both sides:

x+(missing angle)=90

Subtract x on both sides:

(missing angle)=90-x.

So the missing angle has measurement (90-x).

So cos(90-x)=a/c

and sin(x)=a/c.

Since cos(90-x) and sin(x) have the same value of a/c, then one can conclude that cos(90-x)=sin(x).

We can do this also for cos(x) and sin(90-x).

cos(x)=b/c

sin(90-x)=b/c

This means sin(90-x)=cos(x).

So back to the problem:

cos(23)=sin(90-23)

cos(23)=sin(67)

So 67 degrees is one value that we can take the sine of such that is equal to cos(23 degrees).

6 0
3 years ago
Please help im having problem ​
jeka94

Answer:

24

Step-by-step explanation:

Do i need to explain ??????

3 0
3 years ago
2(3x-7)=34 please help
IrinaK [193]

Answer:

x=8

Step-by-step explanation:

2*3x=6x

2*-7=-14

6x-14=34

6x+14=34+14

6x=48

6x/48

x=8

3 0
2 years ago
Ben takes out a personal loan of £1200 with a simple interest rate of 20% for a term of 3 years how much is the total cost of th
lilavasa [31]

Answer:

$1920

Step-by-step explanation:

Original amount: £1200 x Simple interest rate: 0.2 x number of years: 3 = 720

Add Original onto simple interest

£1200 + £720 = £1920

Total Cost of personal loan after 3 years = £1920

5 0
2 years ago
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