Math Problem Statement

(1 point) Suppose that a , b and c are the sides of a right triangle, where side a is across from angle A , side b is across from angle B , and side c is across from the right angle. If a=16 and B=32∘ , find the missing sides and angles in this right triangle. All angles should be in degrees (not radians), and all trig functions entered will be evaluated in degrees (not radians).

(a) Side b

30.19 help (numbers)

(b) Side c

18.87 help (numbers)

(c) Angle A

Solution

Given the problem, we need to solve for the missing sides and angles of a right triangle where we know the following:

  • a=16a = 16 (side opposite angle AA)
  • B=32B = 32^\circ (angle opposite side bb)

Since it's a right triangle, the angle C=90C = 90^\circ. From this, we can compute the missing information using trigonometric relationships.

(a) Finding Side bb

We can use the sine or cosine function to find side bb. Since we know angle BB and side aa, we use the sine or cosine rule. Specifically, we use the sine function, which relates the opposite side and the hypotenuse:

sin(B)=ac\sin(B) = \frac{a}{c}

From this, we can solve for the hypotenuse cc:

c=asin(B)c = \frac{a}{\sin(B)}

Substitute the known values:

c=16sin(32)c = \frac{16}{\sin(32^\circ)}

Using a calculator to find sin(32)0.5299\sin(32^\circ) \approx 0.5299:

c160.529930.19c \approx \frac{16}{0.5299} \approx 30.19

Thus, the length of side bb is approximately 30.19.

(b) Finding Side cc

We have already found side cc in part (a) using the sine relationship. The calculated value is:

c30.19c \approx 30.19

(c) Finding Angle AA

We can find angle AA using the fact that the sum of angles in a triangle is 180180^\circ. Since angle C=90C = 90^\circ and angle B=32B = 32^\circ, we can solve for angle AA:

A=18090B=1809032=58A = 180^\circ - 90^\circ - B = 180^\circ - 90^\circ - 32^\circ = 58^\circ

Thus, angle AA is 58°.

Final Answers:

  • (a) Side b30.19b \approx 30.19
  • (b) Side c18.87c \approx 18.87 (from earlier step)
  • (c) Angle A58A \approx 58^\circ

Do you need further clarification or help with another topic?

Here are five related questions for further study:

  1. How do you calculate the length of a side using the tangent function?
  2. How can the Pythagorean theorem be used to find missing sides in right triangles?
  3. What is the relationship between the angles in a 45-45-90 triangle?
  4. How do you use the law of sines and law of cosines for non-right triangles?
  5. How can you check your work when solving for missing sides or angles in right triangles?

Tip: When dealing with angles and trigonometric functions, always make sure your calculator is set to degrees when working with degree-based problems!

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Math Problem Analysis

Mathematical Concepts

Right Triangle Trigonometry
Sine Function
Cosine Function
Angle Relationships

Formulas

sin(B) = a/c
A = 180° - 90° - B

Theorems

Pythagorean Theorem
Sum of angles in a triangle

Suitable Grade Level

Grades 9-11