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
Katena32 [7]
3 years ago
6

Sin^2x + sin^2x + cos²x

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
7 0

Answer:

Answer:

A. 2 sinx cosx - 1 + 2 sin^2 x.

Step-by-step explanation:

sin2x = 2 sinx cosx

cos2x = cos^2x - sin^2x

So sin2x - cos2x =  2 sinx cosx - ( cos^2x - sin^2x)

But cos^2 x = 1 - sin^2 x, so we have:

2 sinx cosx - (1 - sin^2 x - sin^2x)

= 2 sinx cosx - 1 + 2 sin^2 x.

You might be interested in
Checking Your Understanding
madreJ [45]
The ratio is - 6:12
(6 boys, 12 girls)
3 0
3 years ago
the temperature 0 F ,3 F ,6 F ,5 F,and -1 F have also been recorded in florida .graph these temperature on the number line .
Brut [27]
-1F, 0F, 3F, 5F, 6F  Think of this as a normal number line -3 -2 -1 0 1 2 3 
hope this helped
4 0
3 years ago
Sheila is flying a kite with 250 feet of her string let out. The angle the kite line makes with a line parallel to the ground is
Svetach [21]
The altitude of the kite:
h = 5 + 250 · sin 45°
h = 5 + 250 · √2 / 2
h = 5 + 250 · 0.7071 = 5 + 176.77 = 181.77 ≈ 182 ft
Answer: The altitude is 183 ft.
8 0
3 years ago
Read 2 more answers
Please include step by step
mote1985 [20]

Answer:

x=2 AB=hypotenus(h) angle ACB is 90

BC=p angle CAB is 30 also angle of refrence

Step-by-step explanation:

sin[30]=p/h

(1/2)=x/4

2x=4

x=2

5 0
3 years ago
Find the value of z in the figure below.<br>.​
zzz [600]

answer

z = 100

opposite angles

when inscribed in a circle, the opposite angles of a quadrilateral add up to 180

so z + 80 = 180 and y + 120 = 180

solve for z

z + 80 = 180

z = 180 - 80

z = 100

3 0
2 years ago
Other questions:
  • The segments shown below could form a triangle ac-9 cb-7 ba-16
    10·1 answer
  • A bullet is shot straight upward with an initial speed of 925 ft/s. The height of the bullet after t seconds is modeled by the f
    10·1 answer
  • write the equation of the line that passes through the points 7, -4 and -1, 3 first and point-slope form and then in slope inter
    10·2 answers
  • Renee is sewing a quilt whose pattern contains right triangles. Each quilt piece has a height of 4 in. And an area of 10 in2. Ho
    12·1 answer
  • ILL GIVE BRAINLIEST PLEASEEEE FAST
    8·1 answer
  • Shawnte earned a score of 42 points. There were 19 competitors who received a lower score than Shawnte and 5 competitors who ear
    11·1 answer
  • Find the value of x
    5·2 answers
  • Factor the following quadratic expression x^2 + 9x + 20
    9·1 answer
  • PLS HELP WILL MARK YOU BRAINLIEST! NO FAKE ANSWERS!
    15·1 answer
  • Select all the expressions that are equivalent to 40% of 90. A. 72 B. 36 C. 4/5x9. D. 40/100 divided by 90. E. 2/5x90
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!