Look at the figure below:

if sin y° = 9 divided by c. and tan y° = 9 divided by d. ,what is the value of cos y°?

a.) cos y° = 9c
b.) cos y°=c divided by d.
c.) cos y°=d divided by c.
d.) cos y° = 9d

answer: option c.

step-by-step explanation:

remember the following trigonometric identities:

then, knowing that:

you can identify that the angle is y°, the adjacent side is and the hypotenuse is .

then, you have to substitute them into   . so you get:

(which matches with the option c).

the answer is:

c)

since it's a right triangle we can find the correct answer using the following formulas:

where,

x is the base of the triangle

y is the height of the triangle

h is the hypotenuse of the triangle

so, using the given information we have that:

where:

also, we know that:

where,

therefore,

the correct answer is

c)  

have a nice day!

93.8

step-by-step explanation:

lets say, first number = x

second number = 3x+7

total = 49

(x)+(3x+7)= 49

4x+7 = 49

4x = 42

x = 42/4

x= 10.5

x= 10.5

3x+7 = 3(10.5)+7 = 93.8

hope this

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)