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cos(5) cos(85) - sin(S) sin(85") Find its exact value. Need Help? Read It Master 2 points) DETAILS SPRECALC7 7.2.019.0/50 Submissions Used NOTES ASK YOUR TEACHER Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one nun tan42) - tan(12) 1 + tan(429) tan(129) Find its exact value. Need Help? Read Watch 2 points) DETAILS SPRECALC7 7.2.020.MI. 0/50 Submissions Used NOTES ASK YOUR TEACHER Use an addition or Subtraction Formula to write the expression as a trigonometric function of one nun cos(436) 15) cos(-3) - sin(935) sin(- 3) 13 Find its exact value

Prove the identity sen(-) --com Use the Subtraction Formula for sine, and then simplify D sinfx - ) - (incx)(com()) - (cow) - (sin(x)) - (cos(x) D Need Help? Padre 1-/2 points) DETAILS SPRECALC77.2.035. OVS Submissions Used HY NOTES ASK YOUR TEACHER Prove the identity sin(x) sin(x-7) - 2008) Use the Sum and difference identities for Sine, and then simply sn(x + )(x-n sin costy) + cos(k) sinto) - (sin(x) coat) - D Need Help? Pada [-/3 Points) HY NOTES DETAILS SPRECALC77.2.039. 050 Submissions Used ASK YOUR TEACHER Prove the identity tan(x) - tanly) - 5 since COSE) cosy) Use a Reciprocal Identity, and then rewrite as a single rational expression sint 6 tan(x) - 5 tanly) cos) cos) COS) cos(y) Use an Addition or Subtraction Formula to simplify