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4 years ago

How to find the area for a Isoceles triangle

Mathematics

2 answers:

Makovka662 [10]4 years ago

3 0

Answer:

Using the lengths of the sides, label the lengths of each side, the base, and the height. Then, use the equation Area = ½ base times height to find the area.

r-ruslan [8.4K]4 years ago

3 0

Answer:

Step-by-step explanation:

A=90

Base: 12

Height: 15

Solution

A=<u>b*h</u>

A =<u>12·15</u> =90

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consider this equation sin(theta) = -4 square root of 29/29 if theta is an angle in quadrant IV what is the value of cos (theta)

MatroZZZ [7]

Answer:

$\cos(\theta)= \frac{\sqrt{377}}{29}$

Step-by-step explanation:

Given

$\sin(\theta) = -\frac{4}{\sqrt{29}}$ -- the correct expression

Required

$\cos(\theta)$

We know that:

$\sin^2(\theta) + \cos^2(\theta)= 1$

Make $\cos^2(\theta)$ the subject

$\cos^2(\theta)= 1 - \sin^2(\theta)$

Substitute: $\sin(\theta) = -\frac{4}{\sqrt{29}}$

$\cos^2(\theta)= 1 - (-\frac{4}{\sqrt{29}})^2$

Evaluate all squares

$\cos^2(\theta)= 1 - (\frac{16}{29})$

Take LCM

$\cos^2(\theta)= \frac{29 - 16}{29}$

$\cos^2(\theta)= \frac{13}{29}$

Take square roots of both sides

$\cos(\theta)= \±\sqrt{\frac{13}{29}}$

cosine is positive in the 4th quadrant;

So:

$\cos(\theta)= \sqrt{\frac{13}{29}}$

Split

$\cos(\theta)= \frac{\sqrt{13}}{\sqrt{29}}$

Rationalize

$\cos(\theta)= \frac{\sqrt{13}}{\sqrt{29}} * \frac{\sqrt{29}}{\sqrt{29}}$

$\cos(\theta)= \frac{\sqrt{13*29}}{29}$

$\cos(\theta)= \frac{\sqrt{377}}{29}$

4 0

3 years ago

Use the graph of the line to answer each question

scoundrel [369]

Hello!

A) y-intercept is 5 x-intercept is 5
B) Slope=1
C) y=mx+b
=1(4)+ 6

Hope this Helps! Have A Wonderful Day! :)

3 0

3 years ago

A cylinder has a base with a diameter of 6 cm, and a height of 12 cm. What is its volume?

WITCHER [35]

Answer:

V≈339.29cm³

Step-by-step explanation:

4 0

3 years ago

I need a number greater than 25 that has more factors than 19,21,23

Free_Kalibri [48]

19 has two factors: 1, 19
21 has four factors: 1, 3, 7, 21
23 has two factors: 1, 23

And so we need a number that has more than four factors, and is greater than 25.

50 is one number that fits.

Factors of 50: 1, 2, 5, 10, 25, 50

50 has six factors and is greater than 25.

Hope that helped :)

3 0

4 years ago

Please answer thankssss

dmitriy555 [2]

$\frac{7.5*10^{12} }{2.5*10^{4} } =\frac{7.5}{2.5} *\frac{10^{12} }{10^{4} } = 3 * 10^{12 - 4} = 3*10^8$

Hope that helps!

8 0

3 years ago

Read 2 more answers