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3 years ago

Which equation can you use to find the value of x?

Mathematics

2 answers:

VashaNatasha [74]3 years ago

6 0

Answer:

3x=78+x-2

Step-by-step explanation:

I got it right...Thank the person who answered before me

Vadim26 [7]3 years ago

5 0

Answer:

I would say bottom left

Step-by-step explanation:

It is the most plausible to the equation

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Find the exact value by using a half angle identity.tan 75°

kramer

The trigonometric function is given as

$\tan 75^{\circ}$

Apply the half angle identity to find the value of tan 75 ,

$\tan (\frac{u}{2})=\frac{\sin u}{1+\cos u}$

Here,

$\tan (\frac{150^{\circ}}{2})=\frac{\sin150^{\circ}}{1+cos150^{\circ}}$ $\tan (75^{\circ})=\frac{\frac{1}{2}}{1-\frac{\sqrt[]{3}}{2}}=\frac{\frac{1}{2}}{\frac{2-\sqrt[]{3}}{2}}^{}$ $\tan 75^{\circ}=\frac{1}{2-\sqrt[]{3}}$

Now rationalize the function.

$\tan 75^{\circ}=\frac{1}{2-\sqrt[]{3}}\times\frac{2+\sqrt[]{3}}{2+\sqrt[]{3}}=\frac{2+\sqrt[]{3}}{4-3}=\frac{2+\sqrt[]{3}}{1}$

Again simplify the trigonometric function,

$\tan 75^{\circ}=2+1.732=3.732$

Hence the answer is 3.732.

5 0

1 year ago

A blimp provides aerial television views of a tennis game. The television camera sights the stadium at a 17degrees angle of depr

BaLLatris [955]

Answer:

1379.31meters is the line-of-sight distance from the television camera to the base of the stadium .

Step-by-step explanation:

As given

A blimp provides aerial television views of a tennis game.

The television camera sights the stadium at a 17degrees angle of depression. The altitude of the blimp is 400m.

Now by using the trignometric identity .

$sin\theta = \frac{Perpendicular}{Hypotenuse}$

As the figure is given below .

Perpendicular = AC = 400 m

Hypotenuse = AB

$\theta = 17^{\circ}$

Putting all the values in the identity .

$sin17^{\circ} = \frac{400}{AB}$

$0.29\ (Approx)= \frac{400}{AB}$

$AB= \frac{400}{0.29}$

AB = 1379.31 meters

Therefore the 1379.31 meters is the line-of-sight distance from the television camera to the base of the stadium .

3 0

3 years ago

P=2x^2+22x+328

Hatshy [7]

Answer:

The year is 1984 ?

6 0

3 years ago

If it takes 2 hours to travel a distance of 120 km, how long would it take to travel 210km if the rate remained the same?

SVETLANKA909090 [29]

Answer:

about 3.5 hrs

Step-by-step explanation:

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3 years ago

gayaneshka [121]

Step-by-step explanation:

OOOO

BYE

8 0

3 years ago