Inverse Trig Functions

Question 1

sinh = ?

Answer 1

(e^x - e^-x) / 2

Question 2

cosh = ?

Answer 2

(e^x +e^-x) / 2

Question 3

tanh = ?

Answer 3

(e^x - e^-x) / (e^x + e^-x)

Question 4

sech = ?
coshec = ?
tanh = ?

Answer 4

1/sinh
1/cosh
1/tanh or cosh/sinh

Question 5

cos^2x + sin^2x = 1

hyperbolic form?

Answer 5

cosh^2x - sinh^2x = 1

Question 6

1 + tan^2x = sec^2x

hyperbolic form?

Answer 6

1 - tanh^2x = sech^2x

Question 7

sin2x = ?
sinh2x = ?

Answer 7

2sinxcosx

2sinhxcoshx

Question 8

a) cos2x =

b) cosh2x =

Answer 8

a) cos^2x - sin^2x
2cos^2x - 1
1 - 2cos^2x
b) cosh^2x + sinh^2x
2cosh^2x - 1
1 + 2sinh^2x