Basic Maths used in physics

Question 1

for an angle, 1 degree = __ minutes

Answer 1

60 minutes

Question 2

the three trigonometric identities are :

Answer 2

.

Question 3

sin 37 = cos 53 = ?

Answer 3

3/5

Question 4

cos 37 = sin 53 = ?

Answer 4

4/5

Question 5

tan 37= ?

Answer 5

3/4

Question 6

tan 53 = ?

Answer 6

4/3

Question 7

sin (A+B) = ?

Answer 7

sinAcosB + cosAsinB

Question 8

sin (A-B) = ?

Answer 8

sinAcosB - cosAsinB

Question 9

tan (A+B) = ?

Answer 9

tanA+tanB / 1 - tanAtanB

Question 10

tan (A+B) = ?

Answer 10

tanA - tanB / 1 + tanAtanB

Question 11

sin (2X) = ? for converting 2X to X

Answer 11

2 sinX cosX

Question 12

signs of ratios of quad 1

Answer 12

all +ve

Question 13

signs of ratios of quad 2

Answer 13

sin, cosec +ve

cos,sec,tan -ve

Question 14

signs of ratios of quad 3

Answer 14

tan +ve

cos,sin,sec,cosec -ve

Question 15

signs of ratios of quad 4

Answer 15

cos,sec +ve

sin,cosec,tan -ve

Question 16

𝝅 radians = ? degrees

Answer 16

180

Question 17

2𝝅 radians= ? degrees

Answer 17

360

Question 18

90 degrees = ? radians

Answer 18

𝝅/2

Question 19

for an angle “a” degrees

the formula for converting to degrees is

Answer 19

a degrees = 𝝅/180 * a radians

Question 20

for an angle “a” radians

the formula for converting to degrees is

Answer 20

a radians = 180/𝝅 * a degrees