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When the tangent line meets the circle at that point, what angle does it make with the diameter?
what do you mean?
Well.. uhm a semicircle is 180 so uhmm ... ya. Would that angle be 90?...
A better way to think about is you know that the tangent line would be perpendicular to the diameter. But yes, it is 90-degrees.
You can get a using the theorem I taught you earlier.
WIth that, you can get b.
Could you remind again what that theorem was? Would I subract 54 from 90? Sorry usually im not this blonde about these kinds of things lol
a would be equal half of the 54-degree.
Remember? Half of the angle outside, for as long as the conditions are like the ones above.
a=27. What do you know about a+b?
Thank you so much dude, you're a lifesaver. I may or may not need help with a couple other questions. Wouldnt a + b = 90 in this particular question?
so 90 - 27 = the length of b which would be 63?
I'd advise you the revise your circle theorems. :) If you have a good grasp of them, these problems would be easy.
Awesome! thank you!
or would it be 54?