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aleksklad [387]
3 years ago
9

What is the perimeter of a triangle with the given side lengths? s1 = x – 3 ft s2 = x 2 ft s3 = x 4 ft

Mathematics
1 answer:
choli [55]3 years ago
4 0
The perimeter of the triangle with those given lengths is x7-3
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Please Help. I really don’t get this concept, if you could explain it in detail it would be very appreciated
Dafna11 [192]
<h3>Answer: 24/25</h3>

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

Explanation:

Sine is given to be negative, and so is tangent. This only happens in quadrant Q4

Recall that y = sin(theta), so if sin(theta) < 0, then we're below the x axis.

If tan(theta) < 0, then this means cos(theta) > 0

So we have y < 0 and x > 0 which places the angle somewhere in Q4.

--------------------------

Draw a right triangle as shown below in the attached image. We have AC = 25 and BC = 7. Use the pythagorean theorem to find that AB = 24

So this is what your steps may look like

a^2+b^2 = c^2

7^2+b^2 = 25^2

b^2+49 = 625

b^2 = 625-49

b^2 = 576

b = sqrt(576)

b = 24

So because AB = 24, we know that the cosine of the angle is adjacent/hypotenuse = 24/25

---------------------------

As an alternative, you could use the trig identity

sin^2(x) + cos^2(x) = 1

and plug in the given value of sine to solve for cosine. The cosine value result will be positive since we're in Q4.

So,

sin^2(x) + cos^2(x) = 1

(-7/25)^2 + cos^2(x) = 1

(49/625) + cos^2(x) = 1

cos^2(x) = 1 - (49/625)

cos^2(x) = (625/625) - (49/625)

cos^2(x) = (625-49)/625

cos^2(x) = 576/625

cos(x) = sqrt(576/625)

cos(x) = sqrt(576)/sqrt(625)

cos(x) = 24/25

This is effectively a rephrasing of the previous section since the pythagorean trig identity is more or less the pythagorean theorem (just in a trig form)

6 0
3 years ago
CAN YOU PLEASE GIVE ME THE ANSWER ASP
SVEN [57.7K]

Answer:

N and P

Step-by-step explanation:

N and P grab a like and move the ends in a circle around each letter if they look symmetrical at any point that letter has a line of symmetry.

5 0
3 years ago
Read 2 more answers
What axis does the independent quantity go on?
Contact [7]
Horizontal
The Axes. The independent variable belongs on the x-axis (horizontal line) of the graph and the dependent variable belongs on the y-axis
5 0
3 years ago
What is z? i don’t know how to solve.
vfiekz [6]

Honestly i agree with Nd12217 z is the answer to 136 x 150

Nevermind the answer is wrong

3 0
3 years ago
The equation below shows the relationship between the temperature in degrees Celsius, C, and degrees Fahrenheit, F:
algol [13]
Th first answer
F = 9 over 5 C + 32
5 0
3 years ago
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