precalc
posted by Kelvin .
Find the area of a triangle with sides of length 5 and 8 and included angle 74°. (Round your answer to one decimal place.)

A=1/2absin
A=1/2(8)(5)sin(74)
20sin(74)
=19.2
Respond to this Question
Similar Questions

geometry
what is the length of the hypotenuse of the triangle ABC? 
geometry
If a=6cm, find the area of the equilateral triangle. Round the answer to one decimal place. 
5 PreCalculus Questions
1. What is the value of x in the right triangle below? 
PreCalc Helppp!!!
Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that B1 is smaller than B2.) … 
PreCalc
For the triangle shown, find the length AD. (Assume u = 18, v = 18, x = 10°, and y = 10°. Round your answer to two decimal places.) Show work please!!! 
Math
Find, correct to one decimal place, the size of the smallest angle of the triangle which has sides of length 3,5,7 
math
Two sides of a triangle have lengths 8 m and 24 m. The angle between them is increasing at a rate of 0.05 rad/s. Find the rate at which the area of the triangle is changing when the angle between the sides of fixed length is 135°. … 
calc. 1
You are designing a poster with area 625cm^2 to contain a printing area having margins of 1cm at the top and bottom and 5cm on the sides. Find the largest possible printing area. Round your answer to the nearest four decimal place. … 
geometry
Find the measure of one exterior angle of a regular polygon that has 21 sides. Round your answer to one decimal place. m∠exterior angle 
Pre calc
A 20ft ladder is leaning against a building. If the base of the ladder is 7 ft from the base of the building, what is the angle of elevation of the ladder?