Physics Revision

Question 1

Sin37

Answer 1

3/5

Question 2

Sin53

Answer 2

4/5

Question 3

π radian

Answer 3

180

Question 4

1 radian

Answer 4

180/π

Question 5

1 degree

Answer 5

π/180

Question 6

Rule for signs of T-Ratios

Answer 6

ASTC rule

Question 7

Sin(90° or 270° +- θ)

Answer 7

Cosθ

Question 8

Sin(180° or 360° +- θ)

Answer 8

Sinθ

Question 9

Sinπ, Sin2π, Sin3π………

Answer 9

= 0

Question 10

Cosπ, Cos3π, Cos5π…..

Answer 10

= -1

Question 11

Cos2π, Cos4π, Cos6π……

Answer 11

= +1

Question 12

Sin(A + B)

Answer 12

SinA CosB + SinB CosA

Question 13

Sin(A - B)

Answer 13

SinA CosB - SinB CosA

Question 14

Cos(A + B)

Answer 14

CosA CosB + SinA SinB

Question 15

Cos(A - B)

Answer 15

CosA CosB - SinA SinB

Question 16

Sin(2A)

Answer 16

2 SinA CosA

Question 17

Cos(2A)

Answer 17

Cos^2A - Sin^2A

Question 18

Formula of Straight Line

Answer 18

y = mx + c

Question 19

m

Answer 19

Slope of Straight Line
= Tanθ
The tangent from the angle made by the straight line with the positive X-Axis

Question 20

c

Answer 20

Y Intercept

Y-Coordinate where the straight line intercepts Y-Axis

Question 21

Parabola

Answer 21

Shape of Graph when corresponding to Quadratic Equations

Question 22

Formula

Answer 22

y = ax^2 + bx + c

Question 23

Parabola Up

Answer 23

y = ax^2

Question 24

Parabola Down

Answer 24

y = -ax^2

Question 25

Parabola Right

Answer 25

y^2 = ax

Question 26

Parabola Left

Answer 26

y^2 =-ax

Question 27

Hyperbola

Answer 27

y = c/x^n

c is any constant
n > 0

Question 28

Eclipse

Answer 28

x^2/a^2 = y^2/b^2

Question 29

Circle

Answer 29

x^2 + y^2 = a^2

Question 30

Binomial Expansion

Answer 30

(1 + x)^2 = 1 + nx + n(n-1)x^2/2! + n(n-1)(n-2)x^3/3!

Question 31

remove a^2 from (a + b)^2

Answer 31

a^2(1 + b/a)^2