3 years ago

22

Mathematics

1 answer:

NARA [144]3 years ago

7 0

Answer:

Step-by-step explanation:

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Coffee and bagels equal three dollars . Let x represent the number of customers who order coffee and bagel. How much money will

vladimir1956 [14]

Answer:

r = 3x

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3 years ago

Given sin(theta)= 7/11 and sec(theta)<0 Find cos(theta) and tan(theta)

allsm [11]

When given a trigonometric ratio, and asked to find another ratio, we draw a right triangle as shown in the picture.

From the pythagorean theorem we find the length of AB:

$|AB|= \sqrt{ AC^{2}- BC^{2} }= \sqrt{ 11^{2}- 7^{2} }= \sqrt{121-49} = \sqrt{72} = \sqrt{2*36}$ $= 6\sqrt{2}$

the numerical value of

cos∅=adjacent side/hypotenuse= $\frac{ 6 \sqrt{2} }{11}$

since sec∅=1/cos∅, and sec∅ is negative, then cos∅ is also negative.

Answer:

cos∅= $-\frac{ 6 \sqrt{2} }{11}$