4 years ago

Find the exact value of arccos (sin (pi/6). Explain your reasoning.

1 answer:

4 0

We have to find the exact value of: arc cos ( sin ( π /6 ) ).
We know that:
sin ( π/6 ) = sin 30° = 1/2
Arc cos is the inverse function of cosine.
arc cos ( 1/2 ) = 60° = π/3

You might be interested in

Simplify by finding the product of the polynomials below. Then Identify the degree of your answer. When typing your answer use t

Alona [7]

Given:

$(9a^2-4)(9a^2+4)$

The shown represents the difference between the squares

So, the product of the polynomials will be as follows:

$\begin{gathered} (9a^2-4)(9a^2+4) \\ =(9a^2)^2-(4)^2 \\ =81a^4-16 \end{gathered}$

So, the answer will be:

This simplifies to:

$81a^4-16$

The degree of our simplified answer is 4

3 0

1 year ago

everyday a person uses about 90 liters of water at home 6 gallons is about 23 liters about how many liters of water does a perso

Trava [24]

Answer:

90 liters

Step-by-step explanation:

It's given in the question!

3 0

2 years ago

Add-ons Helplast edit was seconds ago

aleksandr82 [10.1K]

Eeeeeeeeeeeeeeeeee eeeeeeeeeeeeeeeee

6 0

3 years ago

I don't know how to solve this. How would I solve this? Thanks!!!!

Afina-wow [57]

Answer:

x = 11 units

Step-by-step explanation:

Area of triangle = (base + base 2) * h *1/2

so (7 + x )* 7 * 1/2 = 63

63 x 2 = 126

126 / 7 = 18

18-7 = x

x = 11

Check

(7+11)* 7 * 1/2

18* 7 = 126

126 x 0.5 = 63

CORRECT!

(p.s., tell me if wrong :P)

6 0

3 years ago

If $\frac{1}{10}m = \frac{1}{11}m + \frac{1}{1100}$, what is the value of $m$?

PIT_PIT [208]

(1/10)m = (1/11)m +1/1100
(1/10 -1/11)m = 1/1100
(1/110)m = 1/1100
m = (1/1100)/(1/110) = 110/1100
m = 1/10

8 0

4 years ago

Read 2 more answers