Tq is equal to or congruent to qr. find m∠sqt. a. 21 b. 10 c. 4 d. 69

I know this is too late, but its 69 if you are doing a specific figure with a 90 degree angle

Step-by-step explanation:

90-21=69

step-by-step explanation:

b and c

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