Parallelogram Help

  • Thread starter Solidmozza
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  • #1
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Hi, New to this forum.
Im just doing my school certificate (yr10) and need help with 1 question.

PQRS is any parallelogram. If sin P = k, find Sin Q

Probably sounds like a stupid question but heck if you can give me the answer with working id be really happy. :biggrin: thanks
 

Answers and Replies

  • #2
HallsofIvy
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In a parallelogram opposite angles are congruent (angles P and R) and adjacent angles are supplementary (angle P and Q). sin Q= sin (pi- P).
 
  • #3
Alkatran
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Solidmozza said:
Hi, New to this forum.
Im just doing my school certificate (yr10) and need help with 1 question.

PQRS is any parallelogram. If sin P = k, find Sin Q

Probably sounds like a stupid question but heck if you can give me the answer with working id be really happy. :biggrin: thanks
2q + 2p = 360
q + p = 180
q = p-180
k=sin(p)
P=arcsin(k)
q=p-180
q=arcsin(k)-180
sin(q) = sin(arcsin(k)-180)
sin(q) = -sin(arcsin(k))
sin(q) = -k
 

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