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
r-ruslan [8.4K]
3 years ago
10

Prove that sec^2θcosec*2θ-2-cot^2θ=tan2θ

Mathematics
1 answer:
Tema [17]3 years ago
5 0

Answer:

Step-by-step explanation:

I think you mean tan^2θ, not tan2θ.

Use the trigonometric identities

secθ = 1/cosθ

cscθ = 1/sinθ

tanθ = sinθ/cosθ

sin²θ = 1-cos²θ

cos²θ = 1-sin²θ

You might be interested in
There are 39 students sitting on the bleachers and 6 students sitting on the floor. What is the ratio of the number of students
Aleks [24]

Answer:

39;45

Step-by-step explanation:

students on the floor;total students

5 0
4 years ago
Read 2 more answers
Round 45,621 to the nearest hundred.
Schach [20]

Answer:

The answer is 45600 as 621 is less than 650 and should be rounded down.

4 0
3 years ago
Read 2 more answers
How to do y=5x+2 and 3x=-y+ 10
Sunny_sXe [5.5K]
Answer:
y = 5x + 2
5 is the slope 2 is the y-intercept
3x = -y + 10 turns into y = -3x + 10
-3 is the slope 10 is the y-intercept
they intersect at (1, 7)

step-by-step explanation:
I’m not sure what you are wanting me to do with these but i will give you all the information about them
y = 5x + 2 is already in slope-intercept form
5 being the slope and 2 being the y-intercept
to solve for 3x = -y + 10
-3x+y +y-3x
y = -3x + 10
the slope is -3
the y-intercept is 10
they intersect at (1, 7)
5 0
3 years ago
mrs. blat buys 1 or 2 books a month for $13.99 each. she has a magazine subscription that costs her $10.00 a month. the sunday p
elixir [45]
Mrs. Blat spends at least ...
  13.99 +10.00 +6.00 = 29.99
each month. Over the year, this is a minimum of
  12*$29.99 = $359.88

_____
The variable cost is the cost of the 2nd book, which may or may not be purchased in any given month.
7 0
4 years ago
40 pts. Only Real Answers!!!! Which of the following is a true statement? A. The opposite of −45 is equal to the absolute value
-Dominant- [34]

Answer:D

Step-by-step explanation:

8 0
4 years ago
Read 2 more answers
Other questions:
  • What is the area of this figure? <br>Enter your answer in the box. <br><br>__in2​
    13·2 answers
  • School guidelines require that there must be at least 2 chaperones for every 25 students going on a school trip. How many chaper
    11·2 answers
  • WILL GIVE BRAINLIEST!!​
    10·1 answer
  • Add: 4 1/8 + 2 1/16 PLEASE HURRY IM TIMED AND I CANT FAIL OR ELSE I WILL BE GROUNDED BECAUSE I FAILED M6 LAST ONE SO PLEASE HURR
    12·2 answers
  • Which of the following rational functions is graphed below? ​
    13·1 answer
  • Answer question below!!
    14·1 answer
  • △ABC∼△A′B′C′<br> Solve for x and y.
    5·1 answer
  • Can someone help me with these math questions?
    9·1 answer
  • The function f (x) has an average rate of change on the interval -2 &lt; x &lt; 3 of 3.4. If f (-2) = 9 then which of the follow
    12·1 answer
  • The student population at a middle school in June, 2020 was 1678. In September, 2021, the student population was 1463. What is t
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!