# Right triangles

Please give answer and explanation and or steps if needed please to check my work.

1) Draw a right triangle whose sides (not the hypotenuse) have lengths of 8 and 15. Angle A is adjacent to the side of 8, and angle B is adjacent to the side with the length of 15. The tan A=?

2) For the same triangle in question 1 do for the sin A = ?, cos A, and tan B please.

3) If sin x = 0, then cos x =

a 0, b +/- 0.5, c +/- 1, d +/- 0.707, e +/- 0.866

4) If tan x = 1, then x = ?

a 0, b pi/4, c pi/3, d pi/2, e pi

5) What is the radius of a circle whose area is A?

a (pi) * A^2

b the square root of A divided by pi

c A divided by 2 * pi

d the square root of pi divided by A

e A divided by pi

6) Where does the graph of the line y=mx +b cross the x axis?

a b, b m/b, c b/m, d -b/m, e -m/b

7) There are 15 students for each professor. Let S = the # of students, and P = the number of profs. A correct expression for this is?

a P=15S,

b S=15P

c P/S=15

d P+S=16

e S-P=14

Thank you!

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#### Solution Preview

See attachment please!

1) Draw a right triangle whose sides (not the hypotenuse) have lengths of 8 and 15. Angle A is adjacent to the side of 8, and angle B is adjacent to the side with the length of 15. The tan A=?

Then

2) For the same triangle in question 1 do for the sin A = ?, cos A, and tan ...

#### Solution Summary

This shows how to work with trigonometric functions in a right triangle.