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
ASHA 777 [7]
2 years ago
6

Verify csc^2t-cos t sect= cot^2 t

Mathematics
2 answers:
Ymorist [56]2 years ago
7 0

Rewriting the left hand side,

csc²t - cost sec t

= (1/sin²t)-(cost)(1/cost)

= 1/sin²t - 1

= 1/sin²t - sin²t/sin²t

= (1-sin²t)/sin²t

= cos²t/sin²t

= cot²t

nata0808 [166]2 years ago
6 0

Step-by-step explanation:

assuming this is correct, you can really manipulate either side and you should arrive eventually arrive to same sides. But in this case you usually manipulate the more complex side. So I'll manipulate the left side.

Original Equation:

csc^2(t)-cos(t)*sec(t)=cot^2(t)

Rewrite csc and sec, using the reciprocal identities:

(\frac{1}{sin(t)})^2-cos(t)*\frac{1}{cos(t)}=cot^2(t)

multiply cos(t) and 1/cos(t) and also distribute the exponent:

\frac{1}{sin^2t}-1=cot(t)^2

Multiply 1 by sin^2(t)/sin^2(t)

\frac{1}{sin^2(t)}-\frac{sin^2(t)}{sin^2(t)}

subtract the numerator

\frac{1-sin^2(t)}{sin^2(t)}

Pythagorean Identity:

sin^2(t)+cos^2(t)=1

subtract sin^2(t) from both sides

cos^2(t)=1-sin^2(t)

Use this to rewrite the numerator:

\frac{cos^2(t)}{sin^2(t)}

Rewrite using the reciprocal identities:

cot^2(t) = cot^2(t)

You might be interested in
Help plz ASAP for 20pts
Paul [167]

Answer:

Not sure if this is correct but this is what I found.

area of sector=74.84

radius = 8

angle of sector=?

74.84=1/2×8²×angle of sector

74.84=32 × angle of sector

74.84/32= angle of sector

2.33875=angle of sector

Step-by-step explanation:

Sorry if it is incorrect.

4 0
2 years ago
How do you find the area of a triangle?
olganol [36]
To find the area of a triangle, use the formula that is A= 1/2(base x height)
4 0
3 years ago
A and B are two events.
maria [59]

Answer:

0.8

Step-by-step explanation:

We can solve P(A or B) by using the following:

P(AorB)=P(A)+P(B)-P(AandB)

Since we know P(A) = 0.6, P(B) = 0.3 and P(A and B) = 0.1 we obtain:

P(AorB)=0.6+0.3-0.1=0.8


4 0
3 years ago
A video company randomly selected 100 of its subscribers and asked them how many hours of shows they watch per week. Of those su
Xelga [282]

Hello there!

35/100 watch more then 10 hours a week

3000 is 30 times greater than 100 so we can simply multiply 35/100 by 30.

35/100 x 30 = 1050/3000

Therefore, if the company had 3,000 subscribers, 1,050 subscribers would be watching more than 10 hours a week.

6 0
2 years ago
The hypotenuse of the right triangle is 1 in. more than twice the longer leg. The length of the shorter leg is √10 in. Find the
Lorico [155]

hi guys pls friend me i need freinds pls

8 0
1 year ago
Other questions:
  • As part of quality-control program, 3 light bulbs from each bath of 100 are tested. In how many ways can this test batch be chos
    13·1 answer
  • 15/16 × 5/6<br><br> Reduce your answers to simplest form
    6·1 answer
  • TEN POINTS !!!!! if f(x)=x^2-6x and g(x)=x^3 squared what is (fog) (x)
    13·1 answer
  • sherane rolls a standard, six-sided number cube. what is the probability of rolling a multiple of 3?​
    12·2 answers
  • Write an equation in slope-intercept form for the line with slope -2/5 and y intercept 5.
    13·1 answer
  • Chef Leon is making 14 dozen cookies for the school bake sale. He uses 712 cups of pecans to make the cookies. How many cups of
    11·1 answer
  • PLEASE HELP I DON’T UNDERSTAND
    10·1 answer
  • What is the answer 4ax²-3b+12x²-a =​
    11·1 answer
  • Please help! Based on the picture above, select the correct angle pair for 3 and 5
    6·2 answers
  • There are 5 cups of tea in the pitcher. There are 10 fluid ounces of tea in the glass. In fluid ounces, how much more tea is in
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!