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3 years ago

5

during one stage of the drawbridge motion the raised end is 18 yards above the ground. what is the incline of the drawbridge to

the nearest hundredth

1 answer:

8_murik_8 [283]3 years ago

3 0

Answer:

helldfc ghhh44 787666$ 46

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An item is regularly priced at $90 . It is now priced at a discount of 70% off the regular price. What is the price now?

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the answer is 27 dollars

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4+4+4+4what is 4 + 4 + 4 + 4

vredina [299]

Answer 16

Step-by-step explanation:

4+4=8+4=12+4=16

OR

4×4=16

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Evaluate exactly without the use of a calculator (remember to rationalize any denominators). a.(cos 60o)(sin 270o) + tan 225o b.

Rom4ik [11]

Given:

The trigonometric expressions are given as,

$\begin{gathered} a)\text{ }(\cos 60\degree)(\sin 270\degree)+\tan 225\degree \\ b)-\tan 240\degree+(cos45\degree)(\sec 135\degree) \end{gathered}$

Explanation:

a)

The given expression can be rewritten as,

$=(\cos 60\degree)(\sin (360\degree-90\degree))+\tan (270\degree-45\degree)\text{ . . . . .(1)}$

Since, from the trigonometric ratios,

$\begin{gathered} \sin (360\degree-90\degree)=-\sin 90\degree \\ \tan (270\degree-45\degree)=\cot 45\degree \end{gathered}$

On plugging the obtained ratios in equation (1),

$=(\cos 60\degree)(-\sin 90\degree)+\cot 45$

Substitute the trigonometric values in the above equation.

$\begin{gathered} =\frac{1}{2}(-1)+1 \\ =-\frac{1}{2}+1 \\ =\frac{1}{2} \end{gathered}$

Hence, the exact value of the expression is 1/2.

b)

The given expression can be rewritten as,

$=-\tan (270\degree-30\degree)+(\cos 45\degree)(\sec (90\degree+45\degree))\text{ . . . ..(2)}$

Since, from the trigonometric ratios,

$\begin{gathered} \tan (270\degree-30\degree)=\cot 30\degree \\ \sec (90\degree+45\degree)=-\csc 45\degree \end{gathered}$

On plugging the obtained ratios in equation (2),

$=-\cot 30\degree+(\cos 45\degree)(-\csc 45)$

Substitute the trigonometric values in the above equation.

$\begin{gathered} =-\sqrt[]{3}+\frac{1}{\sqrt[]{2}}(-\sqrt[]{2}) \\ =-\sqrt[]{3}-1 \end{gathered}$

Hence, the exact value of the expression is -√3-1.

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1 year ago

X is inversely proportional to y. X is directly proportional to z squared. When y = 4, x = 5.5. Work out the value of x when y =

Hitman42 [59]

4.4

Step-by-step explanation:

X is inversely proportional to y, so x = k/y where k is just a constant.

X is directly proportional to z squared, so x = kz^2 where k is a constant

Here, The second relationship doesn't even matter.

Plug the values for x and y into the first equation and solve for k.

5.5=k/4

k=5.5*4

k=22

Now plug k and the second y back in.

x=22/5

x=4.4

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2 years ago

Just a little gift from me... free 5 points to the first 2 people who answer this question.

gayaneshka [121]

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Step-by-step explanation:

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