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solong [7]
4 years ago
12

Verify the identity.​

Mathematics
2 answers:
sleet_krkn [62]4 years ago
5 0

Answer:

Van Wayne en diere net banako maile Sondag wetenskap en

nataly862011 [7]4 years ago
5 0
Jeosejiwsnwn disbelief issijsise :)
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Determine weather the statement is true or false. Justify your answer
topjm [15]
\begin{gathered} \cos (-\frac{7\pi}{2})=\cos (\pi+\frac{\pi}{2}) \\ \cos (-\frac{7\pi}{2})=\cos (\frac{3\pi}{2}) \end{gathered}

As we know:

\begin{gathered} \cos (x)=0 \\ for \\ x=\pi n-\frac{\pi}{2} \\ n\in Z \end{gathered}

For:

\begin{gathered} n=2 \\ x=2\pi-\frac{\pi}{2}=\frac{3\pi}{2} \\ for \\ n=-3 \\ x=-3\pi-\frac{\pi}{2}=-\frac{7\pi}{2} \end{gathered}

Therefore:

\begin{gathered} \cos (-\frac{7\pi}{2})=0 \\ and \\ \cos (\frac{3\pi}{2})=0 \\ so\colon \\ 0=0 \\ This_{\text{ }}is_{\text{ }}true \end{gathered}

Therefore, the statement is true

7 0
1 year ago
If ADAB ACBA,<br> ZD = 132° and ZC = x + 18
d1i1m1o1n [39]

Answer:

x = 114

Step-by-step explanation:

since the triangles are congruent then corresponding angles are congruent, then

∠ C = ∠ D , that is

x + 18 = 132 ( subtract 18 from both sides )

x = 114

8 0
2 years ago
24 by 72 by 18 in cubic feet
Vadim26 [7]

I have to assume that the 24, the 72, and the 18 are feet.

If those are the dimensions of a rectangular prism, like a box, a crate,
or a humongous block of ice, then

            Volume = (length) x (width) x (height) =

                             (24-ft) x (72-ft) x (18-ft) =  <em>31,104 cubic ft</em>


If those numbers are <u>inches</u>, then here's the easy way to handle it:

       24 inches  =  2 ft
       72 inches  =  6 ft
       18 inches  =  1.5 ft

               Volume  =  (length) x (width) x (height) =

                                     (2ft) x (6ft) x (1.5ft)  =  <em>18 cubic feet


</em>
7 0
3 years ago
Plz answer this question
Rina8888 [55]

Answer:

ANSWER IS 2 ND OPINION

Step-by-step explanation:

MARK ME BRAINLIEST ❤

8 0
3 years ago
Read 2 more answers
54 divided 2479 how do you write it out
Travka [436]

Answer:

2479 divided by symbol then 54

Step-by-step explanation:

plz brainliest

4 0
3 years ago
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