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:
- (side opposite angle )
- (angle opposite side )
Since it's a right triangle, the angle . From this, we can compute the missing information using trigonometric relationships.
(a) Finding Side
We can use the sine or cosine function to find side . Since we know angle and side , we use the sine or cosine rule. Specifically, we use the sine function, which relates the opposite side and the hypotenuse:
From this, we can solve for the hypotenuse :
Substitute the known values:
Using a calculator to find :
Thus, the length of side is approximately 30.19.
(b) Finding Side
We have already found side in part (a) using the sine relationship. The calculated value is:
(c) Finding Angle
We can find angle using the fact that the sum of angles in a triangle is . Since angle and angle , we can solve for angle :
Thus, angle is 58°.
Final Answers:
- (a) Side
- (b) Side (from earlier step)
- (c) Angle
Do you need further clarification or help with another topic?
Here are five related questions for further study:
- How do you calculate the length of a side using the tangent function?
- How can the Pythagorean theorem be used to find missing sides in right triangles?
- What is the relationship between the angles in a 45-45-90 triangle?
- How do you use the law of sines and law of cosines for non-right triangles?
- 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
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