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
vivado [14]
1 year ago
15

Rewrite \sqrt((1+cos45)/(2)) using a half-angle identity

Mathematics
1 answer:
aleksklad [387]1 year ago
7 0

\stackrel{\textit{Half-Angle Identities}}{cos\left(\cfrac{\theta}{2}\right)=\pm \sqrt{\cfrac{1+cos(\theta)}{2}}} \\\\[-0.35em] ~\dotfill\\\\ \sqrt{\cfrac{1+cos(45^o)}{2}}~~ = ~~cos\left( \cfrac{45^o}{2} \right)\implies \sqrt{\cfrac{1+cos(45^o)}{2}}~~ = ~~cos(22.5^o)

You might be interested in
Lake Okeechobee’s water level was at sea level in April. In May, the lake’s level rose 4 inches and in June it rose 2 more inche
Mice21 [21]

Answer:

Just here for points XD.

Step-by-step explanation:

7 0
3 years ago
−4(3m−3)+(−10+8m)=?
Valentin [98]
-4(3m-3)+(-10+8m)
12m+12-1+8m
12m+8m = 20m
+12 -1= +11
answer: 20m+11


*note negative times a negative equals positive and negative times positive is negative 
first: you multiply -4 by 3m which is -12m.
second: you multiply -4 by -3 which is +12
third: find the invisible which is 1. (located right here: +(1) (-10+8m)
fourth: multiply invisible 1 by -10 which is -10
fifth: multiply invisible one by +8m which is +8m 
sixth: combine like terms
seventh: answer
 
5 0
3 years ago
What is 17/8 as mixed fraction?
SashulF [63]
Eight goes into seventeen two times with one remaining, and since the denominator always stays the same, 2 \frac{1}{8} would be your mixed fraction.
5 0
3 years ago
Read 2 more answers
What’s the missing value 2x+3y=12
I am Lyosha [343]

Step-by-step explanation:

To solve this, you either need x or y. So x or y can be the missing values. The most you can do is simply move one of the terms to the other side.

6 0
3 years ago
Make a tree diagram to show sample space. Then select the total number of outcomes.
Margaret [11]

Answer:

B. 10

Step-by-step explanation:

The first choice has 2 options: square or circle

The second choice has 5 options: orange, blue, yellow, red, or green.

2 x 5 = 10 total outcomes

7 0
2 years ago
Other questions:
  • How many tearms are in each factor of this expression 5(6+4x)
    5·1 answer
  • Translate the sentence into an equation. The sum of 2 times a number and 5 is 8.
    6·1 answer
  • 4) -4+5n=18+3n<br>plz help
    10·1 answer
  • What does a hand-warmer generate
    12·2 answers
  • Which is greater 25 feet or 8 yards in 11 inches?
    7·1 answer
  • Solve for n<br> 4n + 12=36
    5·1 answer
  • Please help me answer this question.
    15·1 answer
  • The area of a triangle is 3x3-16x²+9x+28 and the base is x-4. Use synthetic
    12·1 answer
  • This beach ball has a surface area of 452.16 inches². What is its diameter? Use 3.14 for π. inches
    8·2 answers
  • Are you able to help me with my summer school work?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!