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Pls help asap..thank you!

Pls help asap..thank you!-example-1
User Snigdha
by
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2 Answers

1 vote

Answer:

√(21) / 2

Explanation:

The vertical line divides triangle ABC into two right angles which are congruent.

DB has length AB/2, which comes out to 3/2. Regard DB as the base of one of the two right triangles. If the height, CD, is √3, then by the Pythagorean Theorem |AC|² = (3/2)² + (√3)².

Thus, |AC| = √( (9/4) + 3 ), or √( (9 + 12)/4 ), or √(21) / 2

User Jernej Novak
by
7.7k points
1 vote

Answer:

5.25

Explanation:

If CD is perpendicular to AB, a right angle is formed by the perpendicular lines at the base of the triangle. If we know that AB is 3 we can divided that by two to use half the triangle and create a right trianle with a base of 1.5 (half of 3) a height of rad 3 now all we have to do is use P-Thags to find AC which is the hypotenuse. After doing 1.5 squared + rad 3 squared = ac squared you will get the answer of AC = 5.25

User Edric
by
7.4k points

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