Hey there tutor, I need help with this pre-calculus problem on my homework. The topic is trigonometry. This problem should be easy to answer, but it came by hard for me. Can you show me what I should do? Please see the photo. It is for #17. thanks

Content X VA 4.2 Trigonometric Functions: The x Do Mathway | Trigonometry Problem x Course Hero X + X webassign.net/web/Student/Assignment-Responses/tutorial?dep=23894741&tags=autosave#question3831484_14 . .. Submit Answer 17. [0/2 Points] DETAILS PREVIOUS ANSWERS LARPCALC10 4.2.039. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the given value to evaluate each function. cos(-t) = -. (a) cos(t) (b) sec(-t) Need Help? Read It Viewing Saved Work Revert to Last Response 18. [1/1 Points] DETAILS PREVIOUS ANSWERS LARPCALC10 4.2.043. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use a calculator to evaluate the trigonometric function. Round your answer to four decimal places. (Be sure the calculator is in the correct mode.) sin(1.4) 0.9854 Need Help? Read It Type here to search O e W 9 0P 6:33 PM 5/27/2020