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iogann1982 [59]
3 years ago
12

Find the following trigonometric values,rounded to 4 decimal places: 1) tan45. 2)sin70. 3) cos30. 4) cos20

Mathematics
1 answer:
harina [27]3 years ago
7 0
1) Tan45 = 1
2) Sin70 = 0.9397
3) Cos30 = 0.8660
4) Cos20 = 0.9397
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Under what operations are the set of integers closed? Explain your answer. UPDATE ANSWER IS
stich3 [128]

Answer:

see below

Step-by-step explanation:

Closed under addition, subtraction and multiplication

Not closed under division :-

for example  3/4 = 0.75 which is not an integer

8 0
4 years ago
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List the angles in order from smallest to largest. show your work.​
hjlf

Answer:

  • ∠R, ∠P, ∠Q

Step-by-step explanation:

The greater side has greater angle opposite

<u>Sides in ascending order:</u>

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3 0
3 years ago
What are the domain and range of the function f(x)=-3(x-5)squared+4
svet-max [94.6K]
Domain is all real numbers
range
hmm
we know that x^2=a positive number
then multiply it by that negative -3
therefor the range is going to be mostly negative
if we make the x-5  equal to zero, then there is no negative, so
wher x=5, then f(5)=0+4=4
the highest positive number you can get is f(5)=4

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domain=all real number
range is x≤4
6 0
3 years ago
Which of the following are polynomials? Check all that apply.
ASHA 777 [7]

Using the definition of polynomial, it is found that options D and E are polynomials.

D. 4x^4 - 10

E. 15x^2 + 3x - 2

-----------------------

A polynomial of the nth degree is defined by the following equation:

p(x) = a_nx^n + a_{n-1}x^{n-1} + ... + a_2x^2 + a_1x^1 + a_0

The exponents n are integers, and have to be non-negative.

  • In options A and C, there are negative exponents(\frac{3}{5x^4} = \frac{3}{5}x^{-4}), and thus, they are not polynomials.
  • In option B, \sqrt{x} = x^{\frac{1}{2}}, that is, a fractional exponent, thus also not a polynomial.
  • In options D and E, the exponents are integers and non-negative, thus they are polynomials.

A similar problem is given at brainly.com/question/15446728

4 0
2 years ago
If f(x) and it’s inverse, f-1(x), are both plotted on the same coordinate plane, what is their point of intersection
Goryan [66]

Answer:

The origin, or (0, 0)

6 0
3 years ago
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