Test 10 – Question 30

# For question 5 on page 242(Angles, Triangle and Polygons)…

For question 5 on page 242(Angles, Triangle and Polygons), could you explain why the triangle was put into 60,30,90 right triangle and how you came up with b/2 *square root of 3 as the height?

# A triangle with angle measures 30°, 60°, 90° has a perimeter of 18+6√3…

A triangle with angle measures 30°, 60°, 90° has a perimeter of 18+6√3. What is the length of the longest side of the triangle?

# Thomas is making a sign in the shape of a regular hexagon with 4-inch sides…

Thomas is making a sign in the shape of a regular hexagon with 4-inch sides, which he will cut out from a rectangular sheet of metal. What is the sum of the areas of the four triangles that will be removed from the rectangle?

# In the xy-plane what is the slope of the line that passes through the origin and makes a 42° angle with the positive x-axis? A. 0.67 B. 0.74 C. 0.90 D. 1.11

Trigonometry does the trick here. Below is that line making a 42° angle with the positive x-axis. I’ve also drawn a dotted segment to make myself a neat little right triangle. Remember that slope is rise over run—how high the line climbs divided by how far it travels right. In this case, the dotted segment (more…)

# sin (90-x) = 12/13 what is the value of sin x?

Think of a 5-12-13 triangle (that’s one of the Pythagorean triples you should know). Say angle A measures x°, which would make angle C measure (90 – x)°. (I’m choosing those based on the fact that I already know that the sine of angle C will be 12/13.) Now that we’ve got it set up, all we (more…)

# Practice question for Circles, Radians, and a Little More Trigonometry, #5, p. 272, 4th Ed.

Practice question for Circles, Radians, and a Little More Trigonometry, #5, p. 272, 4th Ed.

# Test 7 Section 4 #36

Test 7 Section 4 #36

# I am very confused about why the answer question 5 on page 28 is A…

I sorry I am very confused about why the answer question 5 on page 28 is A would you help me please?

# Can you please explain Test 3 Section 4 #23?

Can you please explain Test 3 Section 4 #23?

# How do you do #18 in Test 6 Section 3 without a calculator?

How do you do #18 in Test 6 Section 3 without a calculator?

# Test 3 Section 3 #20

Test 3 Section 3 #20

# The area bound by the relationship |x|+|y|=2 is

Subject Test Question:

The area bound by the relationship |x|+|y|=2 is

A) 8

B)1

C) 2

D) 4

E) there is no finite area.

How do you find this algebraically?

# A square with an area of 2 is inscribed in a circle. what is the area of the circle?

A square with an area of 2 is inscribed in a circle. what is the area of the circle?

A) pie

B) Pie^2

C) 2pie

D) 2 radical pie

E) 4pie

# A right triangle has side lengths of x-1, x+1, and x+3. What is its perimeter?

A right triangle has side lengths of x-1, x+1, and x+3. What is its perimeter?