Question

tolong kakkk.. jam 10 dikumpulkan !

Answer 1

Verified answer

Jawaban:

C. (1, -2)

Penjelasan:

P(½a, -a)

r²= (½a)² + (-a)² - 1

4 = ¼a² + a² - 1

5 = 5/4a²

a² = 5 × 4/5

a = 2

x= ½a = 1

y= -a = -2

Answer 2

Jawaban:

A

[tex]( - \frac{2}{ \sqrt{5} } . \frac{4}{ \sqrt{5} } )[/tex]

semoga bisa terbantukan ..