O Using what you know about angle pairs formed by parallel lines and a transversal, how are 21, 22, 23, and 24
related in the trapezoid? Explain.
21 and 20
are
and 22 and are
because they are
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Question 5
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Step-by-step explanation:

∠1 and ∠3 are supplemental

and ∠2 and ∠4 are supplemental

because they are alternate interior angles.

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

answer: it's upside down and i can't read it

step-by-step explanation: