1.) <1=25°, <2=155°, <4=155°
Answer:
This is trigonomentry
Use SOHCAHTOA
where :
s is sin
c is cos
t is tan
o is opposite (side)
h is hypotenuse (opposite of 90 degree angle)
and a is adjacent (side)
Sin = o/h
cos = a/h
tan = o/a
in this case we are looking for side BC which is the hypotenuse(h)
and we have the side adjacent(a) to angle 71
since we have a and h determine what to use SIN, COS, OR TAN?
we should use Cos
they‘ve given the angle so we should do this...
Cos71 =
Cos71 = 
now apply algebra...
6.3/cos71= BC
BC= 19.3507869666
BC = 19.4 (3SF)
Answer:

Step-by-step explanation:
Given an hyperbola with the following conditions:
- Foci at (-10,0) and (10,0)
- x-intercept +/- 6;
The following holds:
- The center is midway between the foci, so the center must be at (h, k) = (0, 0).
- The foci are 10 units to either side of the center, so c = 10 and

- The center lies on the origin, so the two x-intercepts must then also be the hyperbola's vertices.
Since the intercepts are 6 units to either side of the center, then a = 6 and 

Therefore, substituting
and
into the standard form

Omg i gave that same question it’s so hard
These are the data collected and the fractions of the sale of the day:
Ornaments sold on Saturday
fraction
Silver 20 20/200 = 1/10
Red 100 100/200 = 1/2
White 30 30/200 = 3/20
Gold 50 50/200 = 1/4
-------
Total 200
Ornaments sold on Sunday
fraction
Silver 50 50/200 = 1/4
Red 110 110/200 = 11/20
White 15 15/200 = 3 / 40
Gold 25 25/200 = 1/8
-------
Total 200
The question is which color ornament represents 1/8 of the sales of the day.
Then, in the table you have the answer.
The last line of the second table shows that the sales of gold ornament on Sunday represents 1/8 of the sales of the day.
The answer is gold ornaments sold on Sunday (option D.)