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
Simplify. What is your answer 8x + 9d + 3x -5d
BlackZzzverrR [31]

Answer:

11x + 4d

Step-by-step explanation:

8x + 9d + 3x -5d

To simplify this we have to group them by their like terms i.e.

= 8x + 3x + 9d - 5d

= 11x + 4d

Mark  brainliest

7 0
4 years ago
Mike jogged a total distance of 5 and 1 over 3 miles during the months of october and November. if mike only jogged 1 over 6 mil
Ksivusya [100]
Mike jogged a total  of A 5 and 1/3 times 1/6
your welcome.
4 0
3 years ago
Read 2 more answers
What is the area of a quadrilateral with vertices at (-2, - 6),
svet-max [94.6K]

Answer:

18 sq. unit

you can draw it on no. line

actually it's rectangle with l=3 and b=6

4 0
3 years ago
In the morning Mary walked 2 1/4 miles around the park. In the afternoon she walked another 5 7/8. how many miles in total did s
anygoal [31]

Answer:

8 1/8 total miles walked.

Step-by-step explanation:

I like to make fractions simple so I would do this,

9/4 plus 47/8

Take 8 and your common denominator and solve.

18/8 plus 47/8 = 65/8 which can be put as 8 1/8.

7 0
3 years ago
6 yd 3 yd 8 yd equal what?​
Kamila [148]

Hello!

Answer:

17 yards

Step-by-step explanation:

Hope this helps have a wonderful day! :3

7 0
3 years ago
Read 2 more answers
Other questions:
  • A b or c? help pls!!
    12·1 answer
  • The stock price of one share in a certain company is worth $360 today. A stock analyst believes that the stock will lose 28 perc
    10·1 answer
  • Is Trazillion a number
    13·2 answers
  • Please answer correctly !!!!!!! Will mark Brianliest !!!!!!!!!!!
    5·1 answer
  • A coin is tossed 12 times. What is the probability of getting heads exactly 7 times?
    13·1 answer
  • Plz help due tomorrow
    6·2 answers
  • Please help me it’s due today
    14·1 answer
  • I need help so please help me :))
    11·2 answers
  • Need answer ASAP AND Please
    15·2 answers
  • Find the length of AB<br><br>​
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!