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
Natalija [7]
4 years ago
11

If 2tanx/1-tan^2x=1/sqrt 3, then x can equal

Mathematics
1 answer:
lara [203]4 years ago
4 0

Answer:

15°,105°,195°,285°

Step-by-step explanation:

\frac{2 tan ~x}{1-tan^2 x} =\frac{1}{\sqrt{3} } \\tan ~2x=tan~30,tan~210,tan~ (30+360),tan~(210+360)\\2x=30,210,390,570\\x=15^\circ,105^\circ,195^\circ,285^\circ

You might be interested in
In the function f(x)=5(x^2-4+___)+15, what number belongs in the blank to complete the square?
Maurinko [17]

Answer:

2² = 4

Step-by-step explanation:

\text{Use}\\(a-b)^2=a^2-2ab+b^2\\\\f(x)=5(x^2-4x+\underline{\ \ \ })+15\\\\x^2-4x\\\\x^2-2(x)(2)\\\\x^2-2(x)(2)+2^2=x^2-4x+4\\\\\text{Therefore}\\\\f(x)=5(x^2-4x+4)+15=5(x-2)^2+15

7 0
3 years ago
Hello, this is the owner sister, but can you please help me?b Please dont remove this for silly things
kondaur [170]
The answer is 825

*Substituted formula is*
30 x (10 + 15) + 5 x 5/2 x 2 + 5 x (30 -(5 x 2)
7 0
3 years ago
Reggie's family went to the beach. They got to the beach at 11:50 A.M. and swam in the
tino4ka555 [31]

Answer:

They left the beach at 2:20pm

Step-by-step explanation:

if they got there at 11:50am and spent 1hr and 20min swimming that would have put them at 1:20pm you then add the 30min they played volleyball which would put you at 1:50pm you then add the 35min they built sand castles for which would put you at 2:20pm. so they left the beach at 2:20pm

7 0
2 years ago
Reader's workshop starts at 10:35am and ends at 11:28am. how many minutes is readers workshop?
Irina-Kira [14]
Readers workshop is 1 hr. 18 mins. if you don't want to put 1 hr. Than it will be 93 mins.

3 0
3 years ago
A running track at a school is shaped like oval. The track is 1/2 miles long . Mr. Perez puts a marker down every 1/8 mile .
Lunna [17]

Answer:

4 markers

Step-by-step explanation:

1/2 miles divided by 1/8 miles equals 4 markers.

1/2 ÷ 1/8

Apply the fraction rule:

1/2 × 8/1

Cross cancel common factor 2:

= 4/1

= 4

Hope this helps!

4 0
3 years ago
Other questions:
  • What is the range of the function y=square root x+5 ?
    5·1 answer
  • An electronics company produces transistors, resistors, and computer chips. Each transistor requires 1 unit of copper, 2 units o
    13·1 answer
  • Find lcm of 861,1353 using methods
    14·2 answers
  • A larger number is five more than double a smaller number. If their difference is 13, what are the numbers
    15·1 answer
  • 4. If f(x)=2x+3(x+4)+5 then f(6)=?
    15·2 answers
  • Object is thrown upward from a height of 15 ft at an initial vertical velocity of 30 ft per second. How long will it take to hit
    7·1 answer
  • The perimeter of a rectangle is 40 cm. The length is 14 cm. Let x = width of the rectangle. Ravi says he can find the width usin
    5·1 answer
  • Karen has $36.08. She bought a book for $8.65 and 2 records for $7.65 each. How much did she spend?
    9·2 answers
  • Find the domain and the range of the following function
    9·1 answer
  • I really need help before tomorrow, but my question is,
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!