Question

Sin(7r/6)=——————

it’s not r but the little r thing in trigonometry

Answer 1

The little "r thing" in trigonometry is the radian measure of an angle.

Using the radian measure of 7π/6, we can evaluate the sine function as follows:

sin(7π/6) = sin(π - π/6)

Using the identity sin(π - θ) = sin(θ), we can simplify this to:

sin(7π/6) = sin(π/6)

The sine of π/6 is 1/2, so we have:

sin(7π/6) = 1/2

Therefore, sin(7r/6) = 1/2 when r is measured in radians.

Answer 2

The symbol you are referring to is called "theta" (θ).

Using radians, sin(7θ/6) = -0.5.

Hope this helped!