How do you calculate #cos^-1 (0.34)#?

1 Answer
jess_r
Feb 7, 2017

A calculator must be used. To put your calculator in degree mode, press the MODE button and select degree, the press the 2nd button then MODE again. For most TI calculators, press the 2nd button then press the cos button then enter the value 0.34. This will give you an answer of 70.123 (when you round to 3 decimal places).

Explanation:

(see answer)

Related questions
See all questions in Basic Inverse Trigonometric Functions
Impact of this question
8245 views around the world
You can reuse this answer
Creative Commons License