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Evaluate the indefinite integral:

Make the following substitution:

and then, the integral (i) becomes

Integrate it by applying the power rule:

Now, substitute back for u = sin x, so the result is given in terms of x:

I hope this helps. =)

Tags: <em>indefinite integral substitution trigonometric trig function sine cosine cosecant sin cos csc differential integral calculus</em>

Skew lines are lines that are not parallel and do not intersect.

BD, AB, FH, EF intersect BF. They are not skew to BF.

DH, CG, AE are parallel to BF. They are not skew to BF.

CD, AC, GH, EG are neither parallel nor do they intersect BF, so they are skew to BF

**Answer:**

The first one because every x value can only have one y value

**Step-by-step explanation:**