Q. Solve the right triangle shown in the figure.A=55.8∘, c=51a≈◻ (Round to the nearest hundredth as needed.)
Use Cosine Function: To find the length of side a, we can use the cosine function since we have the angle A and the hypotenuse c. The cosine of an angle in a right triangle is equal to the adjacent side (which is a in this case) divided by the hypotenuse (which is c). The formula is:cos(A)=caWe can rearrange this formula to solve for a:a=c⋅cos(A)Now we can plug in the values we know:A=55.8 degreesc=51a=51⋅cos(55.8∘)First, we need to calculate the cosine of 55.8 degrees.
Calculate Cosine of Angle: Using a calculator, we find:cos(55.8∘)≈0.5623Now we can multiply this by the length of side c to find side a:a=51×0.5623
Find Length of Side a: Performing the multiplication gives us:a≈28.6773We are asked to round to the nearest hundredth, so:a≈28.68
More problems from Find trigonometric functions using a calculator