All categories

3 years ago

Cos^-1 sqrt 2/2 exact value

Mathematics

1 answer:

Leto [7]3 years ago

8 0

$\sf cos^-1 (\frac{\sqrt{2}}{2})=cos^-1 (\frac{1}{ \sqrt{2}})= \frac{ \pi }{4} ={\boxed{45\°}$

You might be interested in

In a school of 330 students, 85 of them are in the drama club, 200 of them are in a sports team and 60 students do drama and spo

PilotLPTM [1.2K]

Answer:

nn n h hbjfbyfdxjnw1urdnbr3rb3j ruh3w drk4jtYHU&jt5krde,frtnjhd,dbf

Step-by-step explanation:

jddddddmk.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

7 0

3 years ago

Nadia is investigating rotations about the center of regular polygons that carry the regular polygon onto itself. She claims tha

GalinKa [24]

Answer:

$\theta_1 \ n\ \theta_2 = 120, 240$

Step-by-step explanation:

The question is incomplete, as the angles of rotation are not stated.

However, I will list the angles less than 360 degrees that will carry the hexagon and the nonagon onto itself

We have:

$Nonagon = 9\ sides$

$Hexagon = 6\ sides$

Divide 360 degrees by the number of sides in each angle, then find the multiples.

Nonagon

$\theta = \frac{360}{9} =40$

List the multiples of 40

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

Hexagon

$\theta = \frac{360}{6} =60$

List the multiples of 60

$\theta_2 = 60, 120, 180, 240, 300$

List out the common angles

$\theta_1 = 40, 80, 120, 160, 200, 240, 280, 320$

$\theta_2 = 60, 120, 180, 240, 300$

$\theta_1 \ n\ \theta_2 = 120, 240$

This means that, only a rotation of $120, 240$ will lift both shapes onto themselves, when applied to both shapes.

The other angles will only work on one of the shapes, but not both at the same time.

7 0

3 years ago

The histogram represents a data distribution with uniform class widths 1.

aliina [53]

I think it’s b... I don’t but i tried if it is wrong I’m sorry if it was right your welcome

4 0

3 years ago

Read 2 more answers

Maddie climbed 48 mountain in 12 month. find her climbing rate in mountain per month

mina [271]

4 mountains per month, 48/12

4 0

3 years ago

An owner of a small store knows that in the last week 54 customers paid with cash, 42 paid with a debit card, and 153 paid with

goblinko [34]

Answer:

Step-by-step explanation:

54 customers paid with cash

42 paid with debit card

153 paid with credit card

Add them up to find the total amount of people:

54 + 42 + 153 = 249

Now write 54(the number of customers who paid with cash) as a fraction over the total, 249.

54/249

So the probability that customers will pay cash is 54/249 or 18/83

8 0

3 years ago