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
Nana76 [90]
3 years ago
5

Convert this identity to one using sine term(s) only. 1-2cos(r)^2

Mathematics
1 answer:
Natali5045456 [20]3 years ago
8 0
Pythagorean identity:
sin²+cos²=1
Then cos²=1-sin²
Substitute:
1-2cos²
1-2(1-sin²)
1-2+2sin²
2sin²-1
You might be interested in
For the next six month period Sammy wants to calculate the monthly deviation from the average.
jek_recluse [69]

Answer:

Deviation:

July ----- 289.17

August ----- 339.17

September ----- 14800.17

October ----- -65.83

November ----- 10690.17

December ----- -480.83


3 0
3 years ago
Read 2 more answers
When Mr. Desrosiers was younger, he collected Superman comic books and would save his allowance money to purchase more comic boo
Lemur [1.5K]

Answer:

thirty five comic books

8 0
3 years ago
Sorin hits a cricket ball straight up into the air. After 1.5s, the ball is falling straight down with a speed of 6.5 m/s. We wa
sveticcg [70]

Step-by-step explanation:

We have, Sorin hits a cricket ball straight up into the air. After 1.5 s, the ball is falling straight down with a speed of 6.5 m/s.

We want to find the initial vertical velocity of the ball.

The relation between initial speed, final speed, acceleration and time is given by using first equation of kinematics. Let v₀ is the initial speed. So,

v=v_o +at

Here, v = -6.5 m/s, t = 1.5 s and a = -g

v_o=v-at\\\\v_o=v+gt\\\\v_o=-6.5+9.8\times 1.5\\\\v_o=8.2\ m/s

So, the initial velocity of the ball is 8.2 m/s and the formula used is (1).

4 0
4 years ago
Solving for x thank youu
Svetach [21]

Answer:

sqrt (90)

Step-by-step explanation:

(13+5)  is to z    as  z is to 5

(13+5) / z = z/5

18/z = z/5

90 = z^2

z = sqrt (90)

5 0
2 years ago
How do I solve this problem <br> -4q - (-8q) + 10
vichka [17]
If you want to evaluate it, -4q-(-8q)+10 is changed to -4q+8q+10 (two negatives equal positive). Next, -4q+8q is 4q (since the bigger number is positive 8q, you subtract and get 4q). Finally, your answer is 4q+10. Hope this helps! :)
4 0
4 years ago
Other questions:
  • Give all of the possible numbers that could be hals mystery one-digit number
    14·1 answer
  • In the diagram below line EF in GH are ...?
    9·2 answers
  • Yo guys plz help me with this i need it for my homework
    8·2 answers
  • You can simplified <img src="https://tex.z-dn.net/?f=2%20%5Csqrt%7B-3%7D%20" id="TexFormula1" title="2 \sqrt{-3} " alt="2 \sqrt{
    9·1 answer
  • What is the Factor tree of 73
    8·1 answer
  • Given g(t)=−3t+10, find (−3).
    11·1 answer
  • Write an equivalent fraction 11/50 33/
    15·2 answers
  • What is the coefficient of 20x?<br> A. 20x<br> B. x<br> C. 20<br> D. multiplication
    12·2 answers
  • A bakery made 100 donuts. In the display case, 40/100 were chocolate,
    14·2 answers
  • ANSWER ASAP, GIVING BRAINLIEST TO FIRST ANSWER!!!
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!