46.2k views
0 votes
Which is the correct calculation of the y-coordinate of point
A?

Which is the correct calculation of the y-coordinate of point A?-example-1
User Ilyakhov
by
9.0k points

2 Answers

3 votes

Answer:

y =
√(3)

Explanation:

The given circle has a radius of 2 thus OA = 2 , hypotenuse of right triangle

Using Pythagoras' identity in the right triangle formed to find y

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is

1² + y² = 2²

1 + y² = 4 ( subtract 1 from both sides )

y² = 3 ( take the square root of both sides )

y =
√(3)

Thus A = (1,
√(3) )

User Annah
by
8.5k points
3 votes

The answer is D


\sqrt{(0-1)^(2)+(0-y)^(2)}=2

ON EDGE

User Matthew Spencer
by
7.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories