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Vera_Pavlovna [14]
3 years ago
10

What do 110°, 250°, and -470° angles have in common?

Mathematics
2 answers:
gladu [14]3 years ago
5 0
They are all obtuse angles
Nadusha1986 [10]3 years ago
4 0
They are all larger than 90 degrees, and in a triangle they would all be obtuse angles.
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How many true solutions does the equation sinx=cosx-1 have over the interval 0 is less than or equal to x which is less than or
FrozenT [24]
sinx=cosx-1 \\  \\ 
sinx-cosx=-1

Using the identity: sinx-cosx=- \sqrt{2}cos( \frac{ \pi }{4}+x), we get:

- \sqrt{2}cos( \frac{ \pi }{4}+x)=-1 \\  \\ 
cos( \frac{ \pi }{4}+x)= \frac{1}{ \sqrt{2} } \\  \\ 


There are two solutions to this equation:

1)
\frac{ \pi }{4}+x= \frac{ \pi }{4} \\  \\ 
x=0

Since the period of cosine is 2π, so 0 + 2π = 2π will also be a solution to the given equation

2) 
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Therefore, there are 3 solutions to the given trigonometric equation.
7 0
3 years ago
Read 2 more answers
Find the value of y.
Alchen [17]

The 'Y' Coordinate is written second in an order of coordinates which is /X , Y\ Prob such as /12, 5\

3 0
3 years ago
ANSWER AND EXPLAIN IF UR RIGHT ILL MARK U BRAINLIEST!!!
guapka [62]

Answer:

5

Step-by-step explanation:

B and D are congruent. Set them equal to each other.

15x + 5 = 16x - 2

x = 7

Plug into B.

15(7) + 5 = 110

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12y + 10 = 70

12y = 60

60 / 12 = 5 = y

6 0
3 years ago
Pls answer 2,3,5,6 and thank you for helping and pls work it out
skad [1K]

Answer:

2: add 4

3: 6

5: multiply by 2

6: 7

Step-by-step explanation:

7 0
2 years ago
What is 7/10 - 1/2 in simplest form
maw [93]
7/10-1/2 in simple form. so the two fractions have different denominators so you need to multiply both denominators 10x2 = 20 so both fractions have 20 on the bottom so they are like this now: 7/20-1/20= 6/20 simplify by 2: 6/20 divide by 2/2 =3/10. 3/10 is your answer
7 0
3 years ago
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