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
Evgen [1.6K]
3 years ago
7

If sin 21 = cos (5x+9) what is the value of x

Mathematics
1 answer:
n200080 [17]3 years ago
4 0

sin x = cos 54 = sin (90-54) = sin 46

Hence x = 46 deg

Same technique. Sin 21 = cos (5x+9) = sin (90-5x-9)

81-5x = 21

Or 5x = 60

Or x = 12 deg

hope it helps

You might be interested in
I need you to help me solve this
Svet_ta [14]
For the expression to be factor-able the Discriminant  , has to be greater or equal to zero
ax^2 + cx + b = 0


c^2 - 4 ab >= 0 

(-3)^2 - 4 * 1 * b >= 0

9 - 4b >= 0

9 >= 4b

b <= 9/4  (2.25)

Pick any value in that range for ex:

0 , 2,  -3, -6

7 0
3 years ago
If g(x)=4x^2-16 were shifted 5 units to the right and 2 down hat would the new equation be
nadezda [96]

Answer:

This is the answer

Step-by-step explanation:

This is the solution, hope it helps

7 0
3 years ago
The cooler is filled with different juices there are 24 bottles of juice six orange juice four apple juice two cranberry juice a
patriot [66]
There would be 22 juices left in total, 5 oranges juice and 3 apple juice will be left, . But hope it helps
7 0
3 years ago
Y and x have a proportional relationship, and y = 12 when x = 5. What is the value of y when x = 8?
serious [3.7K]
When x = 8 y = 15

The way to figure this out is to subtract 12 by 5. That’s 7 so there’s a difference of 7 between both of the numbers.

Hope this helped!
8 0
3 years ago
If m∠ATB = 20°, m∠BTD = 72°, and m∠CTD = 38°, what is m∠ATC?
Ber [7]

Answer: m∠ATC = 54°

Step-by-step explanation:

Ok, we know that:

m∠ATB = 20° and  m∠BTD = 72°

then we must have that the angle between A and D, is equal to the sum of the angles between A and B, and B and D, or:

m∠ATD = m∠ATB + m∠BTD = 20° + 72° = 92°

Now, we also know that m∠CTD = 38°

And the angle:

m∠ATC  will be equal to the angle between A and D, minus the angle between C and D, or:

m∠ATC = m∠ATD - m∠CTD = 92° - 38° = 54°

7 0
3 years ago
Other questions:
  • Ethan makes $6 per hour mowing lawns and $7.50 per hour bagging groceries. last week, he made a total of $129. The difference be
    10·1 answer
  • Multiply and simplify
    15·1 answer
  • What is 10+10 in the form of addition
    6·1 answer
  • What's the property known as a=b, b=c, so a=c?
    6·1 answer
  • How do I solve this? I'm so confused on what I'm doing
    12·1 answer
  • 3 digit largest number
    5·1 answer
  • 10. Use substitution to solve the system of equations below.<br> - x + 2y = 5<br> 3x - 5y =-11
    9·1 answer
  • 4 -9 -9<br>1 -3 - 6<br><br><br><br>I need hellppppp​
    10·1 answer
  • I SWEAR IF I GET ANOTHER LINK I WILL SCREAM Parth created a Box-and-Whisker Plot to show the average weight of the fish he caugh
    9·1 answer
  • Y=-8x+1 find the slope and y-intercept in this equation.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!