103k views
0 votes
If θ is an angle in standard position and its terminal side passes through the point (-12, 5), find the exact value of sine, theta sinθ in simplest radical form.

a. -5/13
b. 5/13
c. -12/13
d. 12/13

1 Answer

2 votes

Final answer:

The exact value of sine, theta sinθ in simplest radical form is 5/13.

Step-by-step explanation:

To find the exact value of sine, theta sinθ in simplest radical form, we can use the given information that the terminal side of the angle passes through the point (-12, 5). In standard position, the terminal side of the angle will always intersect the unit circle. The x-coordinate of this point represents the cosine value, while the y-coordinate represents the sine value.

Since the x-coordinate is -12 and the y-coordinate is 5, we can use the Pythagorean Identity (sinθ = y/h and cosθ = x/h) to find the value of the hypotenuse:

h = sqrt(x^2 + y^2) = sqrt((-12)^2 + 5^2) = sqrt(144 + 25) = sqrt(169) = 13

Therefore, the exact value of sinθ in simplest radical form is 5/13 (option b).

User Runesoerensen
by
7.4k points