Given: RST is circumscribed about circle A. A. 180

B. 45

C. less than 90

D. 90

and why plz? :)

Option D is the correct option

Step-by-step explanation:

As RT is a tangent on point P, so it will form a right angle at point P with the radius.

So, angle APT = 90 degrees.

Hope this helps...

Good luck on your assignment...

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

x-3y=4

step-by-step e