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3 years ago

What is the value of cos (tan^-1 1)

Mathematics

2 answers:

laila [671]3 years ago

6 0

Hope this helps you!

Tju [1.3M]3 years ago

6 0

Answer:

Step-by-step explanation:

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Is 4,564,282 prime or composite?Explain

daser333 [38]

It's composite.

Since it ends with 2 its an even number, and all even numbers are composite

They are composite because they are divisible by 2, and any number that's divisible by anything other than 1 and itself is composite.

3 0

3 years ago

E:f= 3:7<br> f:g= 2:3<br><br> Work out e:g

Oxana [17]

Answer:

3 : 4

Step-by-step explanation:

i am not fully sure of the answer

thank you

4 0

2 years ago

The second part of the problem is where i need help. The answers i have there have been given by other tutors

tino4ka555 [31]

SOLUTION

From the given value

Since

$\sin u=\frac{7}{25}$

Then using trigonometrical ratios it follows

$\cos u=\frac{24}{25}$

Using hal -ngle it folows

$\begin{gathered} sin(\frac{u}{2})=\sqrt{\frac{1-\frac{24}{25}}{2}} \\ s\imaginaryI n(\frac{u}{2})=\sqrt{\frac{1}{50}} \end{gathered}$

Also

$\begin{gathered} cos(\frac{u}{2})=\pm\sqrt{\frac{1+\frac{24}{25}}{2}} \\ cos(\frac{u}{2})=\sqrt{\frac{49}{50}} \\ cos(\frac{u}{2})=7\sqrt{\frac{1}{50}} \end{gathered}$

Finally?

$\begin{gathered} \tan(\frac{u}{2})=\pm\sqrt{\frac{1-\frac{24}{25}}{1+\frac{24}{25}}} \\ \tan(\frac{u}{2})=\sqrt{\frac{1}{49}} \\ \tan(\frac{u}{2})=\frac{1}{7} \end{gathered}$

3 0

1 year ago

How many elements are in the set {A,B,C}?

Andrew [12]

Three I think. Might be wrong

7 0

3 years ago

Read 2 more answers

Help me pls. not links pls

adelina 88 [10]

Answer:
y = 1/2x

step-by-step explanation:
first find the y-intercept or b
it is 0
next find the slope, rise/run
it is 5/10 or 1/2x
putting those in the equation it would be
y = 1/2x
because the y-intercept is 0 you wouldn’t add it

4 0

3 years ago