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3 years ago

HELP!!! I WILL GIVE BRAINLIEST!!! 10 PTS!!! M triangle A = _______ Show work

Mathematics

1 answer:

vovangra [49]3 years ago

7 0

Answer:

A = 32 degrees

Step-by-step explanation:

The triangle ABC given in the diagram is an isosceles triangle.

An isosceles triangle us a triangle that has two equal sides and two equal angles. The two angles are the base angles. In our diagram, the two base angles are angle A and angle C. The sides opposite the base angles are the two equal sides.

In the diagram, the two equal sides are AB and BC. Both lines are marked with a stroke each and that shoes equality.

Sum of the angles in a triangle is 180 degrees.

(A + B + C) degrees = 180 degrees

Since angle A = angle C ,

C= 2A

2A + 118 = 180

2A = 180 - 118 = 62

A = 62/2 = 31 degrees

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Step-by-step explanation:

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3 years ago

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ryzh [129]

Answer:

TanФ=-1.793

Step-by-step explanation:

$Sin^{2} (A) + Cos^{2} (A) = 1$

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3 years ago

lesya692 [45]

Answer:

x = 1.2

Step-by-step explanation:

AD/AB = DE/BC (Similarity Theorem)

AD = 6 + 4 = 10

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BC = x

Plug in the values

10/6 = 2/x

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3 years ago

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Margaret [11]

Answer:

x = 35°

Step-by-step explanation:

These are corresponding angles. When a transversal crosses 2 parallel lines, 4 angles are created at each intersection, and each pair of corresponding angles between those are congruent.

These angles are congruent, so you can set them equal to each other:

$2x+20=3x-15$