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#1 2007-05-01 06:03:30
- nikita
- Guest
trigonometry
O is the centre of a circle and AT is the tangent to the circle at T.
The radius of the circle is 6 cm and OA = 12 cm.
So together OTA is a triangle. I need to find the area of the region of the triangle that is outside of the circle..
thanx!
#2 2007-05-01 08:18:31
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: trigonometry
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#3 2007-05-01 19:45:04
- nikita
- Guest
Re: trigonometry
Thank you - but how do you know that the area is that? What method do you use?
Thanks again
#4 2007-05-01 20:35:15
- JaneFairfax
- Member
- Registered: 2007-02-23
- Posts: 6,868
Re: trigonometry
OA is twice the length of OT and = ∠OTA is a right angle. ∴ OÂT = π⁄3. From there its straightforward to work everything out.
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