All categories

1 year ago

Write sin81 in terms of cosine

Mathematics

1 answer:

strojnjashka [21]1 year ago

7 0

Answer:

Since 81° is less than 90, we can express this in terms of a cofunction. sin(θ) = cos(90 - θ) sin(81) = cos(90 - 81) sin(81) = cos(9)

Step-by-step explanation:

You might be interested in

Simplify (x - y + 1) - (x + y - 1)

andrey2020 [161]

First, distribute the minus sign across the second set. So you have:

x - y + 1 - x - y + 1

Now, we combine like terms:
x-x=0
-y-y=-2y
1+1=2

So we have -2y+2

Hope that helps.

5 0

2 years ago

Need help on this question asap pleasee

slavikrds [6]

Answer:

4th option

Step-by-step explanation:

The chord- chord angle 67.5° is half the sum of the arcs intercepted by the angle and its vertical angle, that is

67.5 = $\frac{1}{2}$ (x + 90)

6 0

2 years ago

PLEASE HELP ME WITH THIS, I WILL DO ANYTHING!!!

vitfil [10]

Mean is the "meanest" because it requires the most work. Add up the values in your data set and divide by the number of terms in the data.

Let x represent attendees at Harry's Hoedown, then

Mean = $\frac{Martha's (M) + Shirly's (S) + Harry's (x) }{3}$

41 = $\frac{48 + 33 + x}{3}$

123 = 48 + 33 + x

123 = 81 + x

42 = x

Answer: 42

5 0

2 years ago

At what points does the helix r = left angle bracketsin(t), cos(t), tright angle bracket intersect the sphere x 2 + y 2 + z 2 =

r-ruslan [8.4K]

Answer:

the points are = (0.1045, 0.9945, 6) and ( -0.1045, 0.9945, -6)

Step-by-step explanation:

The detailed steps and appropriate substitution is as shown in the attached file.

4 0

3 years ago

Please help with this practice quiz!!

Nady [450]

Answer:

slope is 9

Step-by-step explanation:

use the formula y=mx+b wherein m is the slope and b is the y-intercept

to solve for m, use formula (y2-y1)/(x2-x1):

$\frac{127-1}{5-(-9)}$ = $\frac{126}{14}$ (you add 5 and 9 together because negative + negative is positive)

126/14 = 9

5 0

2 years ago