(5 points) Use a sum/difference identity to find the exact value of cos( -15°). Do not...
14. use sum or difference identity to find the exact value. sin 15°
Use a sum or difference formula to find the exact value of the following Use a sum or difference formula to find the exact value of the following. 271 410 21 41 sin + cos sin 5 15 15 COS 0 8 Х
Use the sum/difference identities to simplify the expression. Do not use a calculator. 51 571 COS - + n- ola O A. cos (1) O B. cos (6) OD. cos (5) Find the exact value by using a sum or difference identity. cos 285° 4 OA. - V3 (V3 - 1) O B. V2 (13-1) O C. - 12(73 +1) OD. - v2(13 - 1)
15. Find the exact value of cos cos co cos - sin sin using a sum or difference formula.
1. Use an identity to find the exact value of cos(?) given that cos(O) = { with 270° << 360°
QUESTION 12 Use a double-angle or half-angle identity to find the exact value of: cos(0) = and 270° <=< 360°, find sin 5 OAV10 10 B. 10 C. None of these OD 10 3 17 OE 4 QUESTION 13 Use a double-angle or half-angle identity to find the exact value of: 3 sin(0)= and 0° <o<90° , find tan 5 - šar 10 OA. 3 B.V10 Octs OD. -V10 E V30 QUESTION 11 Use a double-angle or half-angle identity to...
Find the exact value of cos 75° using the half-angle identity. Choose the exact value of cos 75° ОА. 12-15 V3 B Ос. √2-√3 ID. √2+√3 2 4 2 2
Use a double-angle identity to find the exact value of the expression. 2 cos 267.5° - 1 - 2
5. Use the Sum and Difference Identities or Half-Angle Identities to find the exact value. (Hint: 11 – 4 + or (6) sin () (Hint: : 037
Use the appropriate sum and difference foemula to calculate the exact value of each expression. a) tan (+ b) cos (240° + 459 c) sin (7/3 - 1/1