Question

sin (45° + ∅) - cos (45° - ∅) is equal to

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Answer 1

Answer:

0

Step-by-step explanation:

Taking phi as x

sin(45+x)-cos(45-x)

we know cos x=sin(90 -x)

similarly cos(45-x)=sin(90-45+x)

cos(45-x)=sin(45+x)

sin(45+x)-cos(45-x)

=sin(45+x)-sin(45+x)

=0