Find side x , give your answer 1 decimal place

Following are the calculation to find the x:

Given:

Assuming the triangle is ABC:

then

To find:

x=?

Solution:

To find the x value we use the Law of sine:

Putting the given value:

Therefore, the final answer is "10.8 cm".

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Given:

Let A denote the angle of the given triangle which measures ∠A = 81°

Let B denote the angle which measures ∠B = 40°

The length of the side a = x.

The length of the side b = 7 cm.

We need to determine the value of x.

Value of x:

The value of x can be determined using the law of sine formula.

Applying the law of sine, we have;

Substituting the values, we have;

Simplifying, we get;

Cross multiplying, we have;

Thus, the length of the side x is 10.8 cm.