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
laiz [17]
3 years ago
8

Use trig identities to transform the left side of the equation to the right side.

Mathematics
1 answer:
Taya2010 [7]3 years ago
7 0

<u>Answer and explanation</u>

(1+sinθ)(1-sinθ)=cos²θ

We are to prove that the left hand side is equal to the right hand side.

(1+sinθ)(1-sinθ) = 1(1-sinθ) + sinθ(1-sinθ)

                         = 1 - sinθ + sinθ - sin²θ

                          = 1 - sin²θ

From the trigonometric identity sin²θ + cos²θ = 1,

1 - sin²θ = cos²θ


You might be interested in
Please solve kx-2=7 for x
Goryan [66]

Answer:

x = 9/k

Step-by-step explanation:


5 0
3 years ago
Susan runs 22 km in 2 hours and 45 minutes. What is her average speed in km an hour? Explain your answer please!
Tpy6a [65]

Answer:

22km= 2 hours and 45 mins

To find speed: Distance/Time

22/2.75 = 8

Your answer 8km/h

Step-by-step explanation: When finding speed, the formula is always distance divided by time. 45 minutes of 60 minutes is 3/4 of an hour, and 3/4 is 0.75 is decimal. So you add the 2 + .75, and you'll get 2.75. After you convert the time, you begin dividing and you'll get your answer!

4 0
3 years ago
What Is 89.519 Rounded To The Nearest Whole Number
11111nata11111 [884]
5 and above give it a shove, 4 and below let it go
So if the number in the tenths spot it 5 and above you round up, if it is 4 and below you take the whole number in the original number used and that is your answer. In this case the tenth spot is 5 so you round it to 90
7 0
3 years ago
Read 2 more answers
In downtown Charlotte, building inspectors must regulate the height of buildings. From the top of the BB&amp;T building which is
Morgarella [4.7K]

Answer:

296.89 m

Step-by-step explanation:

assuming that both the buildings are on level ground (i.e their bases are at the same elevation), see attached.

5 0
3 years ago
Jack reads his book for 8 minutes before school and 10 minutes after school. He attends school Monday through Friday. Which equa
sweet-ann [11.9K]

Answer:

<h2>90 min or 1hr 30 mins</h2>

Step-by-step explanation:

Even though the options to choose from are not given in this question we can try and lay our hand on the most likely equation for the number of minutes Jack reads his book.

firstly on a daily Jack reads a total of = 8+10 = 18 mins

He attends school from Mon- fri = 5 days

Now on a weekly basis jack reads = 5*18

in other words, the equation is simply the number of days times the time spent to read his book per day

hence this is  = 90 min or 1hr 30 mins

5 0
3 years ago
Other questions:
  • Two trains leave stations 442 miles apart at the same time and travel toward each other. One train travels at 95 miles per hour
    15·1 answer
  • Note: T is the midpoint of PO.<br> PT = 6x + 4 and TO = 52.
    15·2 answers
  • The value of x is ___________.​
    7·1 answer
  • Want points answer me question
    5·1 answer
  • What is the order of rotational symmetry for the figure
    13·1 answer
  • Help me problem in photo
    14·1 answer
  • How can (1/2)x-5=(1/3)x+6 be set up as a system of equations?
    6·1 answer
  • The measure of angle A is 50⁰ and is complementary to the measure of angle B. If the measure of angle B is 5x-5 , what is the va
    8·1 answer
  • A math teacher has a large box of colored pencils for her students to use during class. Two-sevenths of pencils in the box are r
    10·1 answer
  • Solve for x.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!