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trasher [3.6K]
2 years ago
11

NEED ANSWER ASAP HELP Given ABC with altitude h Prove: sin(B)/b=sin(C)/c

Mathematics
1 answer:
MAXImum [283]2 years ago
8 0

Using the given information in the diagram, we have proven that sin(B)/b = sin(C)/c

<h3>Proving the Sine rule </h3>

From the question, we are to prove that sin(B)/b=sin(C)/c

Consider the right triangle with sides a, c, and h

Using SOH CAH TOA, we can write that

sin(B) = h/c

∴ h = c × sin(B) --------- (1)

Also,

Consider the other right triangle

Using SOH CAH TOA, we can write that

sin(C) = h/b

∴ h = b × sin(C) ---------- (2)

Equate equations (1) and (2)

That is,

c × sin(B) = b × sin(C)

This can then be expressed as

sin(B)/b = sin(C)/c

Hence, the given expression is proven as shown above

Learn more on Proving the Sine rule here: brainly.com/question/12271113

#SPJ1

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Nina [5.8K]
In order to be fulfilled m // n we must take into account the following angle:
 180-105 = 75 degrees
 Therefore, we match this angle to the given expression.
 We have then:
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 Answer:
 
the value of x is:
 
A.
 
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3 years ago
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Let ​h(x)equals​f(g(x)), where f and g are differentiable on their domains. If ​g(9​)equalsnegative 6 and g prime​(9​)equals3​,
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What is the next term in the sequence if the first four are as follows.
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If y=15 when x=3/4, find x when y =25. Show work please!
-BARSIC- [3]

Set up a proportion: x/y = x/y

(.75)/(15) = (x)/(25)

Then cross multiply:

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6 0
3 years ago
Carol is standing 8 feet from a lamppost. The angle of elevation from her eyes to the top of the lamppost is 20o, and the angle
kupik [55]

Answer:

Height of the lamppost = 5.602 ft + 2.912 ft = 8.514 ft

Step-by-step explanation:

The illustration form a triangle that can be demarcated into 2 right angle triangle. One triangle representing depression triangle and the other elevation triangle.

Depression triangle

The opposite side of the triangle formed is the length of the pole from the base to the horizontal line of sight. Therefore,

using tangential ratio

tan 35° = opposite/adjacent

tan 35° = a/8

cross multiply

a = 8 tan 35°

a = 8 × 0.70020753821

a = 5.60166030568

a = 5.602 ft

Elevation triangle

The opposite side of this right angle triangle represent the length from the horizontal line of sight to the top of the lamppost.

tan 20° = opposite/adjacent

tan 20° = b/8

cross multiply

b = 8 tan 20°

b = 8 × 0.36397023426

b = 2.91176187413

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Height of the lamppost = 5.602 ft + 2.912 ft = 8.514 ft

8 0
3 years ago
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