cosbmw by marymactavish Sum and Difference Proofs (continued ...)
Pre-Cal 40S March 26, 2009
May 29, 2015
Proofs of the sum and difference identities.
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cosbmw by marymactavish
Sum and Difference Proofs (continued ...)
A Quiz
PICT0015 by matt-hieu ergosteur
Proofs of the Sum and Difference Identities ...
Rotate ∠ROP so that OP lies on the positive x-axis
O O
TO BE COMPLETED
Proofs of the Sum and Difference Identities ...
Rotate ∠ROP so that OP lies on the positive x-axis
O O
Recall the Even and Odd Identities
sin(-x) = -sin(x) cos(-x) = cos(x) tan(-x) = -tan(x)
The sine and tangent functions are ODD functions. Cosine is an EVEN function.
Proofs of the Sum and Difference Identities ...
Rotate ∠ROP so that OP lies on the positive x-axisO
O
Recall the Even and Odd Identities
sin(-x) = -sin(x) cos(-x) = cos(x) tan(-x) = -tan(x)
The sine and tangent functions are ODD functions. Cosine is an EVEN function.
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