Question

Sin x ÷x + cos x

please answer ​

Answer 1

Answer:

sin(A + B) = sin(A)cos(B) + cos(A)sin(B)

Now let A = B = x. So we get:

sin(x + x) = sin(2x) = sin(x)cos(x) + cos(x)sin(x) = 2sin(x)cos(x)

Therefore,

sin(x)cos(x) = (1/2)sin(2x)

Hope this helps!

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Answer 2

Answer:

sin(A + B) = sin(A)cos(B) + cos(A)sin(B)

Now let A = B = x. So we get:

sin(x + x) = sin(2x) = sin(x)cos(x) + cos(x)sin(x) = 2sin(x)cos(x)

Therefore,

sin(x)cos(x) = (1/2)sin(2x)

Hope this helps!