What angles does this triangle have?

Hi,


I have a 90 degree triangle with the following sides:

Side A: 65"
Side B: 156"
Side C (hypotenuse): 169"

How can I get the angle between Side A and the Hypotenuse?
LVL 11
epichero22Asked:
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Raheman M. AbdulConnect With a Mentor Senior Infrastructure Support Analyst & Systems DeveloperCommented:
angle = sin inverse (opposite side / hypotenuse)
             sin inverse (156 / 169)
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Shaun KlineLead Software EngineerCommented:
This should be the arc cosine of a divided by c, or at least that is what the great Google led me to believe.
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Thibault St john Cholmondeley-ffeatherstonehaugh the 2ndCommented:
yes, or arcsin of b divided by the hypotenuse, or arctan of b divided by a
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BigRatCommented:
Homework question? I ask because all the lengths are multiples of 13. In fact the tangent of the required angle is 5/12
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epichero22Author Commented:
Thanks.  I was using the sinh function in Windows calculator.  That's NOT what I needed.
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