Verify the identities
sin(3x)-cos x sin(2x) = cos^2 x sin x -sin^3x

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

multiply length by height. multiply the length by the height, and then double the product. work out 10 x 10 results = 100 square inches, then work out 100 x 2 = 200. the answer is 200 square inches.

step-by-step explanation:

cross multiplying, we get :

⇒ (3) × (5) = (9) × (x)

⇒ 15 = 9x