Show that the triangle is a right triangle

  • Thread starter bbanbury
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  • #1
bbanbury
1
0
If angles A, B, and C are the angles of a triangle such that sin(A+B)=1/sin(C) and cos(A+B)=cos(C), then show that the triangle is a right triangle.
 

Answers and Replies

  • #2
konthelion
238
0
You need to show your work. But for starters, one way that you can approach this problem is to solve for "A+B" in both equations in terms of "C". Then you can solve for "C" using these two equations. Last, solve for A and B.
 
  • #3
Chewy0087
370
0
Yeah, compound angle formulae a-gogo!
 

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