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aleksley [76]
3 years ago
14

Prove the following theorem indirectly. We will give you a start.Prove that a triangle cannot have two right angles. A triangle

cannot have two right angles. Suppose a triangle had two right angles.
Mathematics
1 answer:
nordsb [41]3 years ago
4 0
A triangle can't have two right angles because there is 180° in a triangle. Each right angle is 90° so it would be impossible
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Answer the question in the picture
Svet_ta [14]
<h3>Answer:</h3>
  • left picture (bottom expression): -cot(x)
  • right picture (top expression): tan(x)
<h3>Step-by-step explanation:</h3>

A graphing calculator can show you a graph of each expression, which you can compare to the offered choices.

_____

You can make use of the relations ...

... sin(a)+sin(b) = 2sin((a+b)/2)cos((a-b)/2)

... cos(a)+cos(b) = 2cos((a+b)/2)cos((a-b)/2)

... cos(a)-cos(b) = -2sin((a+b)/2)sin((a-b)/2)

Then you have ...

\dfrac{\cos{2x}-\cos{4x}}{\sin{2x}+\sin{4x}}=\dfrac{2\sin{3x}\sin{x}}{2\sin{3x}\cos{x}}=\dfrac{\sin{x}}{\cos{x}}=\tan{x}

and ...

\dfrac{\cos{2x}+\cos{4x}}{\sin{2x}-\sin{4x}}=\dfrac{2\cos{3x}\cos{x}}{-2\cos{3x}\sin{x}}=\dfrac{-\cos{x}}{\sin{x}}=-\cot{x}


6 0
3 years ago
URGENT!! GEOMETRY TRANSLATIONS. INCLUDE EXPLANATION IF POSSIBLE
STatiana [176]

First find the new coordinates for P and Q after the translations:

P'(2 + 3, 4 - 4) = P'(5, 0)

Q'(-3 + 3, 2 - 4) = Q'(0, -2)

Now, find the slope from this:

(0 - (-2))/(5 - 0) = 2/5

The slope has remained the same. It is important to note that after any translation, the slope will always remain the same. However, this is not always so for rotations and reflections.

3 0
3 years ago
Find the Value of A. a/15 = 5
mamaluj [8]

Answer:

A/15=5

so multiply 15*5

you would get 75

therefore a=75

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Inez and Roy made three numbers with their number cards .Then their table got bumped and mixed up the three numbers again.One nu
Misha Larkins [42]

The greatest six-digit number they could make is 998,877 I know this because I used the largest digits and put them in order from largest to smallest.

Hope this helps


6 0
3 years ago
An item cost $480 before tax , and tge sales tax is $9.60
elena-s [515]

Answer:

0.02 ; 2%

Step-by-step explanation:

Given :

Cost of item = $480

Tax amount on item = $9.60

The sales tax rate = tax amount on item / cost of item

Sales tax rate = $9.60 / $480 = 0.02

As a percentage :

0.02 * 100% = 2%

7 0
3 years ago
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