13533942
Description
Flashcards by Cara Kennedy, updated more than 1 year ago
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Created by Cara Kennedy
almost 6 years ago
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| Question | Answer |
| the quadratic formula (ax^+bx+c = 0) | x= -b± √(b2-4ac) ——————- 2a |
| circumference of a circle | 2πr = πd |
| area of a circle | πr2 |
| Pythagoras’ theorem | a2+b2=c2 |
| the sine rule | sinA = a —— c a b c —— = —— = —— sinA sinB sinC |
| the cosine rule | cosA = b —— c a2= b2 +c2 - 2bc cosA |
| the tan rule | tanA = a —— b |
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