maths formula

Question 1

sec^2x identity

Answer 1

sec^2x= 1+ tan^2x

Question 2

cosec^2x identity

Answer 2

cosec^2x= 1 + cot^2x

Question 3

domain and range of arctanx

Answer 3

domain: x is any real number
range: -pi/2 <= y <= pi/2

Question 4

domain and range of arccosx

Answer 4

domain: -1<= x <= 1
range: 0<= y <= pi

Question 5

domain and range of arcsinx

Answer 5

domain: -1<= x <= 1
range: -pi/2 <= y <= pi/2