# equations and values Flashcards

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1
Q

sin(30)

A

1/2

2
Q

sin(0)

A

0

3
Q

sin(45)

A

√2/2 or 1/√2

4
Q

sin(60)

A

√3/2

5
Q

sin(90)

A

1

6
Q

cos(0)

A

1

7
Q

cos(30)

A

√3/2

8
Q

cos(45)

A

1/√2 or √2/2

9
Q

cos(6)

A

1/2

10
Q

cos(90)

A

0

11
Q

tan(0)

A

0

12
Q

tan(30)

A

1/√3 or √3/3

13
Q

tan(45)

A

1

14
Q

tan(60)

A

√3

15
Q

area of a rectangle

A

length x width

16
Q

area of a parallelogram

A

base x perpendicular height

17
Q

area of a triangle

A

(base x perpendicular height)/2

18
Q

area of a trapezium

A

1/2 x (a+b) x h

19
Q

circumference of a circle

A

πd or 2πr

20
Q

area of a circle

A

πr²

21
Q

pythagoras ‘ theorem

A

a² + b² = c²

22
Q

trigonometric ratio for tan

A

tan(x) = opposite/adjacent

23
Q

trigonometric ratio for sine

A

sin(x) = opposite / hypotenuse

24
Q

trigonometric ratio for cosine

A

cos(x) = adjacent/hypotenuse

25
Q

quadratic formula

A

(-b +- √b² - 4ac)/2a

26
Q

volume of a cuboid

A

length x width x height

27
Q

volume of a prism

A

corss sectional surface area x length

28
Q

volume of a cylinder

A

πr² x h

29
Q

volume of a pyramid

A

1/3 x perpendicular height x area of base

30
Q

speed

A

distance/time

31
Q

density

A

mass/volume

32
Q

pressure

A

force/area

33
Q

sine rule

A

a/sinA = b/sinB = c/sinC

34
Q

cosine rule

A

a² = b² + c² - 2bc cosA

35
Q

area of a triangle

A

1/2 x a x b x sinC