Knowee
Questions
Features
Study Tools

From the oblique triangle in which a = 6 cm, b= 9 cm and C = 32 degrees, solve for the angle A.

Question

From the oblique triangle in which

a = 6 cm, b = 9 cm and C = 32 degrees, solve for the angle A.

🧐 Not the exact question you are looking for?Go ask a question

Solution

To solve for angle A in the oblique triangle, we can use the Law of Sines. The Law of Sines states that the ratio of the length of a side of a triangle to the sine of the angle opposite that side is the same for all three sides of the triangle.

Here's the step-by-step solution:

  1. Write down the Law of Sines formula: a/sinA = b/sinB = c/sinC

  2. Substitute the given values into the formula. We know a = 6 cm, b = 9 cm, and C = 32 degrees. We're solving for A, so we'll use the formula a/sinA = b/sinC:

    6/sinA = 9/sin32

  3. Solve for sinA:

    sinA = 6*sin32/9

  4. Calculate the value of sinA using a calculator. Make sure your calculator is set to degrees, not radians.

  5. Once you have the value of sinA, find the angle A by taking the inverse sine (also known as arcsin or sin^-1) of the value you calculated. This will give you the measure of angle A in degrees.

Remember, the Law of Sines can give an ambiguous case (two possible solutions for a triangle), but in this case, since the given angle C is acute and side a is shorter than side b, there is only one possible solution.

This problem has been solved

Similar Questions

1A13.5 cm 8.3 cmCB32°The diagram shows triangle ABC, with .AC 13 5cm= , .BC 8 3cm= and angle ABC 32°= .Find angle CAB

The diagram shows a triangle ABC with AC = 6 cm, BC = 8 cm, angle BAC = 60° and angle ABC = 𝛾. Find the exact value of sin⁡𝛾, simplifying your answer.

In triangle ABC, AB=30 cm, AC=18 cm and BC=24 cm. Determine if triangle ABC is a right-angled triangle.

Given up-pointing triangle△ABC, where A = 68degrees°, a = 6, and b = 9, find the measurement of angle B.

300. Let A = (5, −3, 6), B = (0, 0, 0), and C = (3, 7, 1). Show that ABC is a right angle

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.