For Exercises 41-62, verify the identity. 41. 42. cos 2 Use Sum and Difference Formulas to...

  

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For Exercises 41-62, verify the identity. 41. 42. cos 2 Use Sum and Difference Formulas to Verify Identities +x c sn t sin + COS.I 43. tan (x+x)= tan x 44. cos (x-x) = -cos x 45. '3 sin 2 46. tan (x-x) = -tan x 47. sin (x+y)+sin (x-y)=2 sin x cos y 48. cos (x-y)-cos (x+y)=2 sin x sin y +x --COS.X Page For Exercises 41-62, verify the identity. 41. 42. cos 2 Use Sum and Difference Formulas to Verify Identities +x c sn t sin + COS.I 43. tan (x+x)= tan x 44. cos (x-x) = -cos x 45. '3 sin 2 46. tan (x-x) = -tan x 47. sin (x+y)+sin (x-y)=2 sin x cos y 48. cos (x-y)-cos (x+y)=2 sin x sin y +x --COS.X Page