You can simply put the equation as 9x = 36 and divide by 9, then x = 4
Answer:
No because my brain doesn't work on math and I need help on solving inequalities
Answer:
I’m not sure. If your joking or.
We are to verify the identity:
cos(α-B)-cos(α+B) = 2 sinα sinβ
Left hand side = cos(α - B)-cos(α + B)
= cosα cosβ + sinα sinB - (cosα cosB - sinα sinβ)
= cosα cosβ + sinα sinB - cosα cosB + sinα sinβ)
= sinα sinβ + sinα sinβ
= 2 sinα sinβ
= Right Hand side
