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
IRINA_888 [86]
3 years ago
15

If tan a=1/7 and tan b=1/3, prove that cos 2a =sin 4b

Mathematics
1 answer:
koban [17]3 years ago
4 0
Solve is in the pic.

With Geometry..



GoodLuck:)

You might be interested in
HELP ASAP 10 POINTSSSS
dlinn [17]
Answer:
Y= -4 :)

Steps:
Apply rule
-y + 3 = 7
Subtract 3 from both sides
-y + 3 - 3 = 7 - 3
Simplify
-y = 4
Divide both sides by -1
-y/-1 = 4/-1
Simplify
y = -4

7 0
3 years ago
Read 2 more answers
Which of the following best describes a compound event
Alexxx [7]
<span> A compound event is a combination of two or more simple events.</span>
4 0
3 years ago
What is the value of expression below?
Scilla [17]

Answer:

B)1.1

Step-by-step explanation:

I'm 100% sure

8 0
3 years ago
Read 2 more answers
Round 436486.48649 nearest whole number?
Annette [7]
Its 436486  because you don't need to round it up
7 0
3 years ago
Someone please help me!!!
Annette [7]

Answer:

<2 = 75°

<3 = 75°

Step-by-step explanation:

<2 = <6

2x+15 = 45+x

or, 2x-x = 45-15

or, x = 30

so, <2 = 30×2+15 = 75

<6 = 45+30 = 75

Answered by GAUTHMATH

8 0
2 years ago
Other questions:
  • Find the number of possible outcomes from choosing a number from 11 to 20 and a letter of the alphabet.
    9·1 answer
  • Clarence solved the equation 3x + 15 = 33 and showed the following work. 3x + 15 = 33 3x + 15 - 15 = 33 3x = 33 = x = 11 Which o
    7·2 answers
  • Please help!! If the quantity 4 times x times y cubed plus 8 times x squared times y to the fifth power all over 2 times x times
    10·2 answers
  • Rewrite the following improper fraction as a mixed number : 19/5
    6·2 answers
  • 11^-5 ÷ 11^-3 please help!!!!​
    12·2 answers
  • ..........,,....,,,,,,,
    15·1 answer
  • If the r-value, or correlation coefficient, of a data set is 0.934, what is the
    13·1 answer
  • An independent variable is ___. A. directly changed by the experimenter B. manipulated by changes to the dependent variable C. a
    11·2 answers
  • Which statement correctly compares the parking rates for each lot?
    13·1 answer
  • nelson middle school raised $19950 on ticket sales for its carnival fundraiser last year at $15 per ticket. if the school sells
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!