answer.
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
valentinak56 [21]
2 years ago
15

If sin 20 degree=a and cos20 degree=b then which of the following represents the correct value of sin 70 degree in terms of a an

d/or b?
1) a+b
2) a
3) b
4)a-b
Mathematics
1 answer:
Scorpion4ik [409]2 years ago
5 0

ANSWER

3) b

EXPLANATION

Given that:

\sin(20 \degree)  = a

and

\cos(20 \degree)  = b

Recall that the sine and cosine functions are equal for complementary angles.

This implies that,

\sin(70 \degree)  =  \cos(20 \degree)

\sin(70 \degree) = b

You might be interested in
Grandma is trying out a new recipe for raisin bread. Each batch of bread dough makes three loaves, and each loaf contains 15 sli
Tom [10]

Answer:

0.108

Step-by-step explanation:

Using the poisson probability process :

Where :

P(x =x) = (e^-λ * λ^x) ÷ x!

Given that :

Each batch of bread = 3 loaves

Each loaf = 15 slices

Total slice per batch = 15 * 3 = 45 slices

Number of raising added = 100

Average number of raisin per slice, λ = 100/45 = 20/9

Hence,

Probability that a randomly chosen slice has no raising :

P(x = 0) = (e^-λ * λ^x) ÷ x!

P(x = 0) = (e^-(100/45) * (100/45)^0) ÷ 0!

P(x = 0) = (0.1083680 * 1) / 1

P(x = 0) = 0.108

8 0
2 years ago
What is the slope of a line perpendicular to the line whose equation is 2x+8y -64 Fully reduce your answer.
Lelechka [254]

Answer: I am pretty sure it is y=-1/4x-8. Hope this helps!

Step-by-step explanation:subtract the 2x from both sides which gives you 8y=-2x-64. Then you want to divide both sides by 8 to get y=-1/4x-8

6 0
2 years ago
Determine the solution set of x^2-80=0.
Stella [2.4K]
X^2 - 80 = 0
x^2 = 80 ...take the square root of both sides, eliminating the ^2
x = (+-) sqrt 80
x = (+-) sqrt 16 * 5
x = (+-) 4 sqrt 5

so x = 4 sqrt 5 or x = -4 sqrt 5
6 0
2 years ago
Read 2 more answers
A balance scale was in perfect balance when Jane placed a box of candy on one pane of the balance and 3/4 of the same sized cand
dangina [55]

Answer:

Step-by-step explanation:

i'm pretty sure that you will have to add it.

so, when we add two fractions such as 3/4 + 3/4, we make sure that the denominators (the bottom numbers) are the same and then we simply add the numerators (the  top numbers).

in this problem, the denominators are the same so we will simply add 3+3 which equals to 6/4. the denominator will remain the same.

               <em>answer:</em>

                      3/4 + 3/4    =   6/4

<u>i hope this is helpful. </u>

5 0
2 years ago
How is 90,040 written in expanded form
ycow [4]

Answer:

9×10,000+4×10 eauals to 90,040

8 0
2 years ago
Read 2 more answers
Other questions:
  • valerie is ordering salads and drinks for her friends. salads cost $7 each, drinks cost $3 each, and there is a $5 delivery char
    15·1 answer
  • Consider the graph of the line y = x – 4 and the point (−4, 2). The slope of a line parallel to the given line is . A point on t
    13·2 answers
  • Customers can pick their own apples at the happy apple farm. they pay $6 to enter the farm and $3.50 per pound for the apples th
    7·2 answers
  • A biologist tranquilizes 400 wild elephants and measures the lengths of their tusks to determine their ages. Identify the popula
    7·2 answers
  • Which equations represent a line that passes through the points given in the table? Check all that apply.
    12·2 answers
  • A card is drawn from a deck of cards numbered one through twenty. The card is NOT replaced and another card is drawn. Find the p
    5·1 answer
  • Use the position function s(t) = −16t² + 400, which gives the height (in feet) of an object that has fallen for t seconds from a
    11·1 answer
  • Determine the mean of the following numbers: 28,40,53,39,45
    14·2 answers
  • A satellite dish shaped like a paraboloid, has diameter 2.4 ft and depth 0.9 ft. If the receiver is placed at the focus, how far
    13·1 answer
  • Horizontal plane A and vertical plane B intersect at a line. Line n is vertical on plane B and forms a right angle with horizont
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!