Gon functions

Decide which numbers (values ​​of trigonometric functions) are positive or negative (or zero). Positive mark +1 and negative -1.

Correct answer:

sin (263°):  -1
cos (-288°):  1
sin (292°):  -1
cos (-459°):  -1
cos (100°):  -1
cos (790°):  1
cos (923°):  -1
sin (-38°):  -1
sin (154°):  1
cos (-331°):  1

Step-by-step explanation:

sin (263°) = -0.9925 < 0; 263 ° ... Q3; sin Q3 < 0
cos (-288°) = 0.309 > 0; -288 ° ... Q1; cos Q1 > 0
sin (292°) = -0.9272 < 0; 292 ° ... Q4; sin Q4 < 0
cos (-459°) = -0.1564 < 0; -459 ° ... Q3; cos Q3 < 0
cos (100°) = -0.1736 < 0; 100 ° ... Q2; cos Q2 < 0
cos (790°) = 0.342 > 0; 790 ° ... Q1; cos Q1 > 0
cos (923°) = -0.9205 < 0; 923 ° ... Q3; cos Q3 < 0
sin (-38°) = -0.6157 < 0; -38 ° ... Q4; sin Q4 < 0
sin (154°) = 0.4384 > 0; 154 ° ... Q2; sin Q2 > 0
cos (-331°) = 0.8746 > 0; -331 ° ... Q1; cos Q1 > 0

Try another example


Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Our percentage calculator will help you quickly and easily solve a variety of common percentage-related problems.
Do you want to round the number?
See also our trigonometric triangle calculator.

You need to know the following knowledge to solve this word math problem:

Units of physical quantities:

Grade of the word problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: