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
Sidana [21]
3 years ago
7

Sin 7A = cos 3A, then m∠A is what?

Mathematics
1 answer:
lbvjy [14]3 years ago
8 0

Answer:

m∠A = 9°

Step-by-step explanation:

\sin 7A =  \cos 3A \\  \\ \sin 7A =  \sin(90 \degree -  3A) \\  \\ 7A =  90 \degree -  3A\\  \\ 7A  + 3A=  90 \degree  \\  \\ 10A=  90 \degree  \\  \\ A =  \frac{90 \degree}{10}  \\  \\  m \angle A =9 \degree

You might be interested in
5. Two points are 10 units apart on the coordinate plane. If
eimsori [14]

Answer:

8

Step-by-step explanation:

Let's say the ant is walking across the floor. Then it hits the wall and starts climbing to the ceiling.

We have a right triangle, as in the diagram, so we can apply Pythagoras' Theorem.

x² +  6² = 10²

x² + 36 = 100

       x² =  64

        x =     8

The ant must walk eight vertical units.

3 0
3 years ago
Math picture, please help
Sergeu [11.5K]

the sum of all interior angles in a polygon is 180(n - 2), where n = number of sides.

well, this is a quadrilateral, so it has 4 sides so it has a total of interior angles of 180(4-2) = 360°, since this is a kite, then <u>one pair of opposite angles are congruent</u>, namely ∡C = ∡A.

360° - 45° - 100° = 215°, and ∡C and ∡A split that evenly, so ∡C = 107.5°.

5 0
3 years ago
Solve the following equation. –4y + 8 = 4(2y – 2) – 2(–16 + 8y) A. y = –4 B. y = 4 C. y = –2 D. y = –6 I need Help I am utterly
leonid [27]
The answer is B. (y = 4)


Further explanation:

–4y + 8 = 4(2y – 2) – 2(–16 + 8y)
= -4y + 8 = 4 * (2y -2) - 2 * (-16 + 8y)
= -4y + 8 = ( 4 * 2y - 4 *2 ) - (2 * -16 - 2 * 8y )
= -4y + 8 = 8y - 8 - ( -32 - 16y)
= -4y + 8 = 8y - 8 + 32 + 16y
Move y’s to the left & numbers to the right
= -4y - 8y - 16y = -8 + 32 - 8
= 12y - 16y = -16 + 32
Y = 16 / 28
Y = 4 = (B choice)
3 0
3 years ago
3(2k-5)=6(k-4)+9
charle [14.2K]

Answer:

infinite solutions

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Walt is mixing fruit punch for a party. He combines 1 gallon 2 quarts 3 pints of orange juice, 1 gallon 3 quarts 7 pints of pine
mafiozo [28]
1 gal + 2 qt + 3 pts
1 gal + 3 qt + 7 pts
1 gal + 3 qt + 3 pts
----------------------------add
3 gal + 8 qt + 13 pts

1 gal = 4 qts
1 gal = 8 pts
1 pt = 1/2 qt

13 pts =  6.5 qts
now we have 3 gal + (8 + 6.5) = 3 gal + 14.5 qts
12 qts = 3 gal
now we have : 6 gal + 2.5 qts or 6 gal + 2 qts + 1 pt <=== answer


5 0
3 years ago
Other questions:
  • A nurse is making identical first aid bags for patients using 72 antiseptic wipes, 55 adhesive bandages, and 36 packets of ointm
    13·1 answer
  • The length of the shadow on flat ground of a man who is 6 feet tall and is standing up straight is 8 feet. The distance between
    6·2 answers
  • 9pie/3<br><img src="https://tex.z-dn.net/?f=9%5Cpi%20%5Cdiv%203" id="TexFormula1" title="9\pi \div 3" alt="9\pi \div 3" align="a
    11·2 answers
  • How many seconds are in a hour
    10·2 answers
  • Use inductive reasoning to describe the pattern. Then find the next two numbers in the pattern. –9, –4, 1, 6, . . .
    5·2 answers
  • The average test scores for a particular test in Algebra 2 was 84 with a standard deviation of 5. What percentage of the student
    12·2 answers
  • I need help please i got a 51% !!!
    9·2 answers
  • Find the length of BC.<br> A)8<br> B)12<br> C)16<br> D)18
    6·2 answers
  • 1/3n=4 plz find ansewer for me plz
    12·1 answer
  • Average of 2.24 4.63
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!