4 years ago

Please help me i need answers ASAP!!

Mathematics

1 answer:

mafiozo [28]4 years ago

4 0

Answer:

I believe the first one is A

Step-by-step explanation:

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Answer:

The value of cosθ is $\frac{15}{17}$

Step-by-step explanation:

It is given that an angle θ with the point (15, −8) on its terminating side.

Here x=adjacent side=15 units and y=opposite side =-8 units,

Using pythagoras theorem,

$\text{hypotenuse}^2=\text{base}^2+\text{opposite side}^2$

$\text{hypotenuse}^2=(15)^2+(-8)^2$

$\text{hypotenuse}^2=225+64=289$

$\text{hypotenuse}^2=17$

Cosine is defined as

$\cos \theta=\frac{base}{hypotenuse}$

$\cos \theta=\frac{15}{17}$

Therefore the value of cosθ is $\frac{15}{17}$ .

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