Given sin0= 3/7, and tan0 <0, what is the value of coso?

Mathematics

1 answer:

spin [16.1K]2 years ago

8 0

sin θ = 3 / 7 = .429

sin^2 θ + cos^2 θ = 1 trig identity

9/49 + cos^2 θ = 1

cos^2 θ = 40 / 49 = .816 cos θ = .903

Check .429^2 + .903^2 = 1

cos .903 = 25.4 deg

In the second quadrant sin = +, cos = -, tan = -

So 25.4 deg in the second quadrant = 180 - 25.4 = 154.6 deg

Check:

sin 154.6 = .428

cos 154.6 = -.903

tan 154.6 = -.475

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10q-30 is equivalent to what ?

butalik [34]

Answer:

10(q-3)

last option

please brainliest me btw

Step-by-step explanation:

The expression states 10q-30

The GCF is 10 (30 GCF by 10 Is 10)

Factor out 10

After, divide all the terms by 10

10 (10q/10) - 30/10

Simplify this and we get

10(q-3)

so in conclusion, it is the last option.

3 0

3 years ago

Select the ordered pairs that are located 8 units away from the point (2.1).<br><br> Plssss help

elena-14-01-66 [18.8K]

The ordered pairs that are located 8 units away from the point (2, 1) are; (-6,1), (10,1), (2,-7) and (2,9)

<h3>Ordered pairs and Distance.</h3>

The ordered pairs which can be 8 units away from the point, (2, 1) are pairs in which case, either x or y coordinates or both are 8 units from the given pair of coordinates (2,1).

Hence, the following pair of coordinates have x or y coordinates which are 8 units away from the x or y coordinates of the given pair of coordinates.