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memorize.ai (lvl 286)

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tangent trigonometric values

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Math

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Date created

Mar 1, 2020

Cards (45)

Section 1

(45 cards)

tangent trigonometric values

Front

0 = 0 30 = sqrt(3)/3 45 = 1 60 = sqrt(3) 90 = undefined 180 = 0

Back

convert bw natural and common log

Front

log x = lnx/2.303

Back

p shorthand for

Front

-log

Back

Exponent division

Front

X^A/X^B = X^(A-B)

Back

centi

Front

10^-2

Back

Math with Significant Figures

Front

multiplication/division: least number of significant digits in any of the factors addition/subtraction: decimal points are maintained (same # of decimal points as fewest decimal points)

Back

Cosine trigonometric values

Front

0 = 1 30 = sqrt (3)/2 45 = sqrt(2)/2 60 = 1/2 90 = 0 180 = -1

Back

mega

Front

10^6

Back

logA x B

Front

logA + logB

Back

deci

Front

10^-1

Back

Exponents to exponents

Front

(X^A)^B = X^(A*B)

Back

Negative exponent

Front

X^-A = 1/X^A

Back

adding/subtracting exponents

Front

to add and subtract exponents, both the base and the power must be the same. If they are, just add or subtract as you normally would. So, 3x^2+5x^2=8x^2

Back

log 1/A

Front

-log A

Back

16^2

Front

256

Back

14^2

Front

196

Back

zeroth power

Front

x^0 = 1

Back

11^2

Front

121

Back

Celsius to kelvin

Front

K=C+273

Back

Euler's number

Front

2.718

Back

Exponent as a fraction

Front

X^A/B = ^Bsqrt(X^A)

Back

deka

Front

10^1

Back

Sin trigonometric values

Front

0 = 0 30 = 1/2 45 = sqrt(2)/2 60 = sqrt(3)/2 90 = 1 180 = 0

Back

15^2

Front

225

Back

log A/B

Front

log a - log b

Back

estimation w/division

Front

round one number up and the other up

Back

hecto

Front

10^2

Back

13^2

Front

169

Back

log_a(1)

Front

0

Back

log_a(A)

Front

1

Back

estimation w/multiplication

Front

round one number up and the other down

Back

Fractions to an exponent

Front

(X/Y)^A = X^A/Y^A

Back

sqrt(2)

Front

1.414

Back

12^2

Front

144

Back

Multiplication exponents

Front

X^A * X^B = X^(A+B)

Back

estimating logs

Front

log (n x 10^m) = m + 0.n --> log(9.2*10^8) = 8 + 0.92 = 8.92

Back

17^2

Front

289

Back

tera

Front

10^12

Back

Log A^B

Front

b log a

Back

giga

Front

10^9

Back

sqrt(3)

Front

1.732

Back

Celsius to Farenheit Conversion

Front

F=9/5C+32

Back

19^2

Front

361

Back

18^2

Front

324

Back

Significant Figure Rules

Front

1) Any digit between the first nonzero digit on the left and the last nonzero digit on the right is significant. 2) Any zeros to the left of the first nonzero digit are considered to be leading zeros and are not significant. 3) If there are zeros to the right of the last nonzero digit and there is a decimal point in the number, than those zeros are significant figures. If there is no decimal point, then they are not 4) For measurements, the last digit is usually an estimation and is not considered significant

Back