step-by-step explanation:
i hate black
the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth
answer:
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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