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1 year ago

60

Mathematics

1 answer:

weeeeeb [17]1 year ago

5 0

sin = y / r

sin = -60 / 61

y = -60

r = 61

x = ?

---To find x, we'll use the Pythagorean theorem.

60^2 + x^2 = 61^2

3600 + x^2 = 3721

x^2 = 121

x = 11

Quadrant 3 is (-, -) = x and y coordinates are both negative.

Therefore, x = -11.

cos = x / r

x = -11

r = 61

cos = -11 / 61

Hope this helps!

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————————

You can actually use either the product rule or the chain rule for this one. Observe:

• Method I:

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y = cos x · cos x

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• Method II:

You can also treat y as a composite function:

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Tags: derivative chain rule product rule composite function trigonometric trig squared cosine cos differential integral calculus

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