1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vitfil [10]
3 years ago
14

Plz help me on this say it in a complete sentence plz plz

Mathematics
2 answers:
ladessa [460]3 years ago
7 0
Which Numbers or do you need help on all of them
Katen [24]3 years ago
4 0
Where is the hospital in number 15
You might be interested in
Please help me for the love of God if i fail I have to repeat the class
Elena-2011 [213]

\theta is in quadrant I, so \cos\theta>0.

x is in quadrant II, so \sin x>0.

Recall that for any angle \alpha,

\sin^2\alpha+\cos^2\alpha=1

Then with the conditions determined above, we get

\cos\theta=\sqrt{1-\left(\dfrac45\right)^2}=\dfrac35

and

\sin x=\sqrt{1-\left(-\dfrac5{13}\right)^2}=\dfrac{12}{13}

Now recall the compound angle formulas:

\sin(\alpha\pm\beta)=\sin\alpha\cos\beta\pm\cos\alpha\sin\beta

\cos(\alpha\pm\beta)=\cos\alpha\cos\beta\mp\sin\alpha\sin\beta

\sin2\alpha=2\sin\alpha\cos\alpha

\cos2\alpha=\cos^2\alpha-\sin^2\alpha

as well as the definition of tangent:

\tan\alpha=\dfrac{\sin\alpha}{\cos\alpha}

Then

1. \sin(\theta+x)=\sin\theta\cos x+\cos\theta\sin x=\dfrac{16}{65}

2. \cos(\theta-x)=\cos\theta\cos x+\sin\theta\sin x=\dfrac{33}{65}

3. \tan(\theta+x)=\dfrac{\sin(\theta+x)}{\cos(\theta+x)}=-\dfrac{16}{63}

4. \sin2\theta=2\sin\theta\cos\theta=\dfrac{24}{25}

5. \cos2x=\cos^2x-\sin^2x=-\dfrac{119}{169}

6. \tan2\theta=\dfrac{\sin2\theta}{\cos2\theta}=-\dfrac{24}7

7. A bit more work required here. Recall the half-angle identities:

\cos^2\dfrac\alpha2=\dfrac{1+\cos\alpha}2

\sin^2\dfrac\alpha2=\dfrac{1-\cos\alpha}2

\implies\tan^2\dfrac\alpha2=\dfrac{1-\cos\alpha}{1+\cos\alpha}

Because x is in quadrant II, we know that \dfrac x2 is in quadrant I. Specifically, we know \dfrac\pi2, so \dfrac\pi4. In this quadrant, we have \tan\dfrac x2>0, so

\tan\dfrac x2=\sqrt{\dfrac{1-\cos x}{1+\cos x}}=\dfrac32

8. \sin3\theta=\sin(\theta+2\theta)=\dfrac{44}{125}

6 0
3 years ago
Which of the following number would have digit 5 at units place?
BARSIC [14]

Answer:

B

Step-by-step explanation:

cause it's got a 5.....5 x 5 = 25.......make sense

6 0
3 years ago
Please i need help :( <br> What is the Y- intercept of the graph of the linear function ?
emmainna [20.7K]

Answer:

Looks like -6

Step-by-step explanation:

4 0
2 years ago
the waiter places a bowl of soup in front of lacy in a counterclockwise direction she passes the soup 90° the person receiving t
dybincka [34]

haifia is the answer did it on test

5 0
3 years ago
~PLEASE HELP ASAP OFFERING 10 POINTS~
Ipatiy [6.2K]
At every 1.0 unit, boiling point decreases 1.8 unit, which means the slope m = -1.8.
6 0
3 years ago
Other questions:
  • Find the inverse of the function f(x)= 2x - 4 and show explain each step used to find the inverse.
    13·1 answer
  • 700/200 in a terminating decimal
    8·1 answer
  • Can you help me find the answer to <br> 3(-6+6x)=18
    9·2 answers
  • Randy bought 4 candy bars for 4.28 what is the cost per bar
    5·2 answers
  • What is the cube root of 729 to the 3rd power
    12·1 answer
  • A yard is equal in length to three feet. The function f(x) takes a measurement
    10·1 answer
  • Simplify. a - {4 b - [ a - (5 b - c ) + 3 c - ( a - b - 9 c )]}
    12·1 answer
  • HELP MARKING BRAINLEIST
    12·1 answer
  • Please please please helppppppppp
    8·1 answer
  • Please answer this in steps....​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!