Question

sin (45° + A) - sin (45° - A)= √2 sin A.​

Answer 1

Step-by-step explanation:

sin(a+b)= Sina cosb+cosa sin b

sin(a-b) = sina cos b-cosa sinb

so

sin(a+b)-sin(a-b) = 2cosa sinb

= 2*cos45.sin A

=2*(1/√2).sinA

=√2sinA

Answer 2

Answer:

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Step-by-step explanation:

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