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zzz [600]
3 years ago
15

A ladder leans against a building. The foot of the ladder is 2 feet from the building and reaches to a point 7 feet high on the

building. What is the measure of the angle formed by the building?

Mathematics
1 answer:
Luda [366]3 years ago
8 0

Answer:

74.05 degree

Step-by-step explanation:

A ladder leans against a building. The foot of the ladder is 2 feet from the building and reaches to a point 7 feet high on the building.

The ladder forms a right angle triangle with the building

Base of the triangle is 2 feet

The distance between the ground and the top of the ladder is 7 feet

the graph is attached below

AB= 2, AC = 7

We know the opposite and the adjacent side so we use tan formula

Tan (x) = \frac{opposite}{adjacent} =\frac{AC}{AB} = \frac{7}{2}

x = tan^-1 (7/2)

x = 74.05 degree

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Which do the following options represent the measure of arc RA
ANTONII [103]

Answer:

77.2°

Step-by-step explanation:

Consider the triangle JKR.

∠KJR=108.6 (lies on the same line as ∠RJA, angles on a straight line add up to 180)

All the angles in a triangle add up to 180, so:

∠JKR+∠KJR+∠JRK=180

∠JKR+108.6+32.8=180

∠JKR=38.6=∠RKA

Consider ∠RKA. This angle stands on the same arc as ∠RCA.

Since the angle at centre is twice the angle at circumference, 2(∠RKA) = ∠RCA.

2(∠RKA) = ∠RCA

2(38.6)=∠RCA

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Answer:

.78 x = 42

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Step-by-step explanation:


6 0
3 years ago
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8 0
3 years ago
How do I solve the following system of equations? <br>-5x-3y=7<br>-3x-4y=2​
garri49 [273]

Answer:

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Step-by-step explanation:

Systems of equations can be solved using different methods.  For this set of systems, you can multiply each equation by a factor in order to eliminate a variable and solve for the other variable:

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Step-by-step explanation:

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