Question

sin (45+a) - cos (45-a)​

Answer 1

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Answer 2

Answer:

We know that sin(@)=cos(90-@) { @=45-a}sin(45+a)=cos(90-45-a) = cos (45-a)thensin(45-a) - cos (45-a)= cos (45-a) - cos (45-a)= 0