Use a calculator to find, in degrees correct to 1 decimal place, the principal value of

a) cos⁻¹ (0.6)

b) sin⁻¹ (0.25)

c) 

d) tan⁻¹(10) 

e)
cos⁻¹ (−0.83)

f)

Transcribed Image Text:

tan-¹ 19 20