Answer Happy

a b. 1. Using the subtraction formulas for sine and cosine, the compound angle formula for tan(Y) is tan x + tany tan x-tany 1-taxtany c. 1 + tanx tany tan x+tany tanx-tany 1 + tanx tany d. 1 - tanx tany 2.Which compound angle formula is the easiest to use to develop the expression cos8-sin? 6? addition formula for sine c. subtraction formula for sine b. addition formula for cosine d. subtraction formula for cosine 3. Which compound angle expression is equivalent to cosxcosy-sin x siny? sin(x + y) C. sin(x - y) b. cos(x + y) d. cos(x - y) a. a. cos a b. sin C. -six d. a. b. 4. An equivalent trigonometric expression for COSX none of the above 13 5. Use your calculator to determine the value of sec 11, to three decimal places. -1.189 C. -0.841 1.002 d. 0.998 6. Use your calculator to determine the value of cos (-1.71), to three decimal places. -0,139 C. 0.139 1.000 d. -1.000 7. Determine the exact value of 32 0 C. 1 -1 d. undefined 5x cot 8.Determine the exact value of a. b. CSC a b. a Si- a చ14- c. b d. Sada 1 / 1 9. Determine the approximate degree measure for an angle of 1.32 radians. 136.4° C. 75.6° 2.4° b. 4.2° d. a b. 10. Determine the approximate degree measure for an angle of 7 radians. 25.7° C. 0.4° 51.4° d. 22.0°