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
skelet666 [1.2K]
3 years ago
6

40 = 90^2/16 sinx cosx find x

Mathematics
1 answer:
lbvjy [14]3 years ago
5 0

Answer:

<h2>x = 4.545</h2>

Step-by-step explanation:

Given the expression

40=\frac{90^2}{16}  sinxcosx\\\\Cross\ multiplying;\\\\16*40 = 90^2 sinxcosx\\\\640 =  90^2 sinxcosx\\\\\frac{640}{8100} = sinxcosx\\ from\ trig\ identity, sin2x = 2sinxcosx\\sinxcosx = sin2x/2\\

Hence, \ \frac{640}{8100} = \frac{sin2x}{2}  \\\\\frac{2*640}{8100} = sin2x\\ \\\frac{1280}{8100}=sin2x\\ \\0.158 = sin2x\\\\2x = sin^{-1} 0.158\\\\2x = 9.09\\x = 9.09/2\\x =4.545

You might be interested in
A rocket was launched from the ground and reached its maximum height of 36 feet at
sergeinik [125]
This has to be figured out using a graph I don’t have one rn I’m just helping
4 0
3 years ago
The Richter scale is used to measure the intensity of an earthquake. If E, measured in joules, is the energy released during an
Cerrena [4.2K]

Answer:

You have given no numbers, so I attached a table I found at the University of Wichita.  

Step-by-step explanation:


8 0
4 years ago
What are the four next multiples of one over ten
sergij07 [2.7K]

1/10- 2/10- 3/10- 4/10- 5/10


Hope this helps!

4 0
4 years ago
Read 2 more answers
(3.12*10^15)-(4.26*10^14)
CaHeK987 [17]

Answer:

  • 2.694*10¹⁴

Step-by-step explanation:

  • 3.12*10¹⁵ - 4.26*10¹⁴ =
  • 31.2*10¹⁴ - 4.26*10¹⁴ =
  • (31.2 - 4.26)*10¹⁴ =
  • 26.94*10¹⁴ =
  • 2.694*10¹⁴
8 0
3 years ago
Read 2 more answers
Javier used the equivalent ratios to find the number of millimeters in 8 inches.
Darya [45]
203.2 mm is ur answer 
6 0
3 years ago
Other questions:
  • Which statement correctly describes the end behavior of y = −3x5 + 5x2 +2x + 1
    7·1 answer
  • The ratio of junior varsity members to varsity members on the track team is 3:5. There are 24 members on the team. Write a propo
    10·1 answer
  • A computer repair technician charges $50 to make a house call plus $75 for each hour spent fixing a computer. This relationship
    14·1 answer
  • What is a numerical expression?
    7·2 answers
  • If a cookie recipe that makes 2 dozen cookies calls for 2 1/4 cups of flour, how cups of flour do you need to make 5 dozen cooki
    9·1 answer
  • I need help. Thank you.
    5·1 answer
  • Write 34/38 in lowest terms
    14·2 answers
  • The table below shows the ages of employees under 30 at a company and their annual salaries.Choose the scatter plot that shows t
    12·2 answers
  • For 2-4 use mental math strategies to solve 4,505-3,515
    12·1 answer
  • . The marching band packed 3060 сans of juice into boxes for a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!