Mathematics Flashcards by Kenneth Wright | Brainscape

Q

1^2 = __

A

1

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Q

2^2 = __

A

4

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Q

3^2 = __

A

9

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Q

4^2 = __

A

16

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Q

5^2 = __

A

25

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Q

6^2 = __

A

36

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Q

7^2 = __

A

49

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Q

8^2 = __

A

64

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Q

9^2 = __

A

81

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Q

10^2 = __

A

100

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Q

11^2 = __

A

121

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Q

12^2 = __

A

144

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Q

13^2 = __

A

169

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Q

14^2 = __

A

196

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Q

15^2 = __

A

225

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Q

16^2 = __

A

256

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Q

17^2 = __

A

289

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Q

18^2 = __

A

324

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Q

19^2 = __

A

361

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Q

20^2 = __

A

400

Q

√(2) ≈ __

A

1.4

Q

√(3) ≈ __

A

1.7

Q

rules of logarithms:

log(A) 1 = __

A

0

Q

rules of logarithms:

log(A) A = __

A

1

Q

rules of logarithms:

log A*B = __

A

log A + log B

Q

rules of logarithms:

log A/B = __

A

log A - log B

Q

rules of logarithms:

log A^B = __

A

B log A

Q

rules of logarithms:

log 1/A = __

A

log A

Q

conversion between common and natural logarithms:

A

log x ≈ ln x / 2.303

Q

estimating logarithms:

e.g. log of 7,426,135,420 –>

A

log (n * 10^m) ≈ m + 0.n

e.g. log of 7,426,135,420 –> 7.4 x 10^9 –> 9 + 0.74 = 9.74 (actual = 9.87)

Q

common trigonometric ratios:

sin 0° = __

A

0

Q

common trigonometric ratios:

sin 30° = __

A

1/2

Q

common trigonometric ratios:

sin 45° = __

A

√(2)/2

Q

common trigonometric ratios:

sin 60° = __

A

√(3)/2

Q

common trigonometric ratios:

sin 90° = __

A

1

Q

common trigonometric ratios:

sin 180° = __

A

0

Q

common trigonometric ratios:

cos 0° = __

A

1

Q

common trigonometric ratios:

cos 30° = __

A

√(3)/2

Q

common trigonometric ratios:

cos 45° = __

A

√(2)/2

Q

common trigonometric ratios:

cos 60° = __

A

1/2

Q

common trigonometric ratios:

cos 90° = __

A

0

Q

common trigonometric ratios:

cos 180° = __

A

-1

Q

common trigonometric ratios:

tan 0° = __

A

0

Q

common trigonometric ratios:

tan 30° = __

A

√(3)/3

Q

common trigonometric ratios:

tan 45° = __

A

1

Q

common trigonometric ratios:

tan 60° = __

A

√(3)

Q

common trigonometric ratios:

tan 90° = __

A

undefined

Q

common trigonometric ratios:

tan 180° = __

A

0

Q

Celcius to Farenheit:

A

F = 9/5 C + 32