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math final reveiw
Question | Answer |
---|---|
A²+B²=C² | pythagorean theorom |
The sides of a 30,60,90 triangle | 1,2,√3 |
The sides of a 45,45,90 triangle | 1,1,√1 |
triangle with the two sides smaller than hypotenuse | obtuse |
triangle with the two sides bigger than hypotenuse | acute |
an inscribed angle = | half of its arc |
angle outside the circle = | subtract the arcs divide by two |
angle inside the circle equals | add the arcs and divide by two |
length of arc | = n/360*2pi R |