What is the use of the cos() function?(a) To find the cosine of a number(b) To find the sine of a number(c) To find the tan of a number(d) To find the inverse cosine of a numberI got this question in an internship interview.My question is based upon Mathematical Functions in chapter Arduino Programming of Arduino

What is the use of the cos() function?(a) To find the cosine of a numb

1.	What is the use of the cos() function?(a) To find the cosine of a number(b) To find the sine of a number(c) To find the tan of a number(d) To find the inverse cosine of a numberI got this question in an internship interview.My question is based upon Mathematical Functions in chapter Arduino Programming of Arduino
Answer» Correct answer is (a) To find the cosine of a number The explanation is: The COS() function is used to find the cosine of a number. It takes one argument; the number whose cosine is to be found out. This number is to be ENTERED in the radian format and not the degree format. This function can accept any number-based datatypes and GIVES the output in the DOUBLE DATATYPE.

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