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3 years ago

This partial circle has a radius of 11 inches.

Mathematics

1 answer:

omeli [17]3 years ago

6 0

To get the area of a circle do pi r squared

<span>π11^2=380.1327111</span>

multiply that by 3/4 = 285.0995333

thats your answer.
you multiply by 3/4 because you have 3/4 of a circle.

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find the value of the trigonometric function sin (t) if sec t = -4/3 and the terminal side of angle t lies in quadrant II

kodGreya [7K]

Answer:

$sin(t) =\frac{\sqrt{7}}{4}$

Step-by-step explanation:

By definition we know that

$sec(t) = \frac{1}{cos(t)}$

and

$cos ^ 2(t) = 1-sin ^ 2(t)$

As $sec(t) = -\frac{4}{3}$

Then

$sec(t) = -\frac{4}{3}\\\\\frac{1}{cos(t)} =-\frac{4}{3}\\\\cos(t) = -\frac{3}{4}$

Now square both sides of the equation:

$cos^2(t) = (-\frac{3}{4})^2$

$cos^2(t) = \frac{9}{16}\\\\$

$1-sin^2(t) =\frac{9}{16}\\\\sin^2(t) =1-\frac{9}{16}\\\\sin^2(t) =\frac{7}{16}\\\\sin(t) =\±\sqrt{\frac{7}{16}}$

In the second quadrant sin (t) is positive. Then we take the positive root

$sin(t) =\sqrt{\frac{7}{16}}$

$sin(t) =\frac{\sqrt{7}}{4}$

8 0

2 years ago

Use to isolate the variable.

diamong [38]

What do you need help will I don't see an question or anything

6 0

2 years ago

3/4x+5=11<br>what's the value of x?

aniked [119]

here is your answer my friend.

$\frac{3x}{4} + 5 = 11$

$\frac{3x + 20}{4} = 11$

$3x + 20 = 44$

$3x = 44 - 20$

$3x = 24$

$x = \frac{24}{3}$

$x = 8$

4 0

3 years ago

If angle DCA measures 50 degrees, what does angle ACB measure?

vitfil [10]

Answer:

Part 1:

Angle DCB is a right angle.

So, angle DCA + angle ACB = 90

Angle ACB = 90 - angle DCA = 90-50=40

Answer is option C. 40

===========================

Part 2:

Angle DCB is a right angle.

So, angle DCA + angle ACB = 90

Angle ACB = 90 - angle DCA = 90-60=30

Answer is option B. 30

6 0

3 years ago

Need to know asap!! thanks

PolarNik [594]

Answer:

628 9/16 m

Step-by-step explanation:

distance = (100)(2)(22/7) = 628.57 m or 628 9/16

6 0

2 years ago