← CA a national university login × 1 System Alerts | National x❘z https://www.webassign.net/web/Student/Assignment-Res 33. [0/1 Points] DETAILS MY NOTES AUFCAT8 6.4.00 Write the expression as the sum or difference of two functions. cos 6x sin x 21 (sin((7x) - sin (5x))) Need Help? Watch It Additional Materials X eBook Submit Answer 34. [-/1 Points] DETAILS MY NOTES AUFCAT8 6.4.013. Find the exact value of the expression. Do not use a calculator. cos 45° cos 15° Watch It Need Help? Additional Materials eBook Qnational university login x N 1 System Alerts | National X D2L Week Three Assignment D2L Week Three Assignment - X 404 - Page Not Found -C XWMTH 215 Week 3 HW-M X + C G https://www.webassign.net/web/Student/Assignment-Responses/submit?dep=35669290&tags=autosave #question3198642_38 A✩ ☐ ☐ 65°F This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise Find the exact radian value. Step 1 COS ·--(-√2) Let = cos 05-¹(-2). Then is the angle whose measure is in the interval [0, π] and cos 0 = Therefore, the terminal side of angle & must lie in Quadrant II Step 2 II Let 0' be the reference angle for 0. Because 0<<π, which of the following formulas can be used to find '? θ' = θ - π 0' = π- 0 Step 3 Now, cos 0 = and Therefore, 1 = Therefore, cos 0' = Mostly cloudy What is the exact radian value of 0'? 3元 4 Q Search 11:45 PM 9/19/2024