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sp2606 [1]
3 years ago
8

Please help!! Find the radius r.

Mathematics
1 answer:
ZanzabumX [31]3 years ago
6 0
If u need to go from radius to diameter multiply radius times 2: d=2r
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Prove that tan60+tan70-tan50+tan10=2sqrt3?
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<span>= 8*tan(10)/{1 - 3*tan²(10)} </span>

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<span>= [8*tan(10) + tan(10) - 3*tan³(10)]/{1 - 3*tan²(10)} </span>

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<span>= 3 [3*tan(10) - tan³(10)]/{1 - 3*tan²(10)} </span>

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<span>{3*tan(10) - tan³(10)}/{1 - 3*tan²(10)} = tan(3*10) = tan(30)]</span>
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