Sum and Difference
Proofs (continued ...)




             cosbmw by marymactavish
A Quiz




         PICT0015 by matt-hieu ergosteur
Proofs of the Sum and Difference Identities ...




                         Rotate ROP so that
                          ...
Proofs of the Sum and Difference Identities ...




                          Rotate ROP so
                              ...
Recall the Even and Odd Identities
 The sine and tangent functions are ODD functions.
 Cosine is an EVEN function.
  sin(-...
Proofs of the Sum and Difference Identities ...




                              Rotate ∠ROP so that OP
                 ...
Recall the Even and Odd Identities
 The sine and tangent functions are ODD functions.
 Cosine is an EVEN function.
  sin(-...
Pre-Cal 40S March 26, 2009
Pre-Cal 40S March 26, 2009
Pre-Cal 40S March 26, 2009
Pre-Cal 40S March 26, 2009
Pre-Cal 40S March 26, 2009
Pre-Cal 40S March 26, 2009
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Pre-Cal 40S March 26, 2009

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Proofs of the sum and difference identities.

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Pre-Cal 40S March 26, 2009

  1. 1. Sum and Difference Proofs (continued ...) cosbmw by marymactavish
  2. 2. A Quiz PICT0015 by matt-hieu ergosteur
  3. 3. Proofs of the Sum and Difference Identities ... Rotate ROP so that O O OP lies on the positive x-axis TO BE COMPLETED
  4. 4. Proofs of the Sum and Difference Identities ... Rotate ROP so O O that OP lies on the positive x-axis
  5. 5. Recall the Even and Odd Identities The sine and tangent functions are ODD functions. Cosine is an EVEN function. sin(-x) = -sin(x) cos(-x) = cos(x) tan(-x) = -tan(x)
  6. 6. Proofs of the Sum and Difference Identities ... Rotate ∠ROP so that OP O O lies on the positive x-axis
  7. 7. Recall the Even and Odd Identities The sine and tangent functions are ODD functions. Cosine is an EVEN function. sin(-x) = -sin(x) cos(-x) = cos(x) tan(-x) = -tan(x)

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