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
Anestetic [448]
3 years ago
8

Write each expression in terms of sines and/or cosines and then simplify.

Mathematics
1 answer:
Sedaia [141]3 years ago
8 0
Tan(x)= sin(x)/cos(x), therefore, substitute sin(x)/cos(x) in the expression:
=(cos(x)(sin(x)/cos(x))-1)/cos^2(x)
simplify the 2 cos(x):
=(sin(x)-1)/cos^2(x)
Sin^2(x)+ cos^2(x)=1, sin^2(x)-1=- cos^2(x), substitute in the expression:
= -cos^2(x)/cos^2(x)= -1
You might be interested in
Translate into an algebraic expressions: b is decreased by 40% and decreased again by 40% . What is the result ?
Vikki [24]

Answer:

b-4/5b

Step-by-step explanation:

b is decreased by 80%

dat is 80/100×b

= b-80/100b

b-4/5b

5 0
2 years ago
Which number produces a rational number when you multiplied by 0.5
strojnjashka [21]
2

Hope I helped!

Let me know if you need anything else!

<span>~ Zoe (Rank:'Genius')</span>
8 0
3 years ago
Simplify: <br><br> (-3i)(4i)(-5i)
Alecsey [184]
60i
if you go to mode on your calculator then Chang it from "real" to "a+bi" you can solve for unreal numbers. if you press "2nd" then "." it makes an "i"

4 0
3 years ago
Please solve!!!<br><br> in a hurry!!! <br> (show work/explain answer)
Gnoma [55]

Answer:y=4x+2

Step-by-step explanation:

-4x+y=2

−4x+y+4x=2+4x

y=4x+2

y=4x+2

4 0
2 years ago
Plzzzzzzzzz answer fast brainlist and five stars
Kruka [31]

Answer:

C

Step-by-step explanation:

trust

3 0
3 years ago
Other questions:
  • Which of the following is not equivalent to the formula d = rt? (5 points) Select one: a. d over r = t b. r = dt c. d over t = r
    6·2 answers
  • In 2002, the temperature on the first day of summer was 79°F. This is 4°F less than it was on the first day of summer the previo
    9·1 answer
  • How do you divide -5.2 by 3.9? (step by step) please my test is tomorrow
    7·1 answer
  • Which ordered pair is a solution of 6x+3y=15
    12·1 answer
  • Which of the following equations has infinitely many real solutions? A. 6x + 1 = 6x − 1 B. 6(x − 8) = 6x − 48 C. 6x + 1 = x − 1
    5·1 answer
  • For x &gt; 3, values of the function f(x) = –(x – 3)2(x + 2) are negative. On this same interval, which statement correctly desc
    9·2 answers
  • Haley's softball team has a phone tree in case a game is cancelled. The coach calls three players. THen each of those players ca
    13·1 answer
  • The expression −260+18 m represents a submarine that began at a depth of 260 feet below sea level and ascended at a rate of
    5·1 answer
  • Whats What is the value of the expression 11 − ( fraction 1 over 2 )4 ⋅ 48?
    12·2 answers
  • Hours After Sunset, X
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!