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Write cosine function to solve word problem: A 20 foot ladder rests against a wall. The ladder makes a 55∘ angle with the ground. How far from the wall is the base of the ladder?
Sin(42.5)=x300Sin(42.5)=\frac{x}{300}Sin(42.5)=300x
Cos(55)=x20Cos(55)=\frac{x}{20}Cos(55)=20x
Sin(45)=x100Sin(45)=\frac{x}{100}Sin(45)=100x
Write cosine function to solve word problem:
Adeel is flying a kite and realizes that 100 feet of string are out. The angle of the string with the ground is 60. Find horizontal distance covered by his kite?
Cos(60)=x100Cos(60)=\frac{x}{100}Cos(60)=100x
Cos(42.5)=x300Cos(42.5)=\frac{x}{300}Cos(42.5)=300x
Cos(45)=x500Cos(45)=\frac{x}{500}Cos(45)=500x
Adeel is flying a kite and realizes that 500 feet of string are out. The angle of the string with the ground is 45. Find horizontal distance covered by his kite?
A ladder rests against a wall. The base of the ladder is 8 feet from the wall. The angle ladder make with the ground is 45 Find length of the ladder?
cos(45°)=8x\cos(45°)=\frac{8}{x}cos(45°)=x8
Cos=1420Cos=\frac{14}{20}Cos=2014
cos(50°)=x40\cos(50°)=\frac{x}{40}cos(50°)=40x
A 20 foot ladder rests against a wall. The angle ladder make with the ground is 60 Find base of the ladder from the wall.
Cosx=720Cosx=\frac{7}{20}Cosx=207
cos(60°)=x20\cos(60°)=\frac{x}{20}cos(60°)=20x
Nauman is flying his kite one afternoon and notices that he has let out the entire 20 ft of string. The angle his string makes with the ground is 30∘. Find horizontal distance covered by his kite.
Sin(30)=x40Sin(30)=\frac{x}{40}Sin(30)=40x
Cos(40)=x10Cos(40)=\frac{x}{10}Cos(40)=10x
Cos(30)=x20Cos(30)=\frac{x}{20}Cos(30)=20x
A ladder rests against a wall. The base of the ladder is 28 feet from the wall. The angle ladder make with the ground is 60 Find length of the ladder?
A 40 foot ladder rests against a wall. The base of the ladder is 28 feet from the wall. What angle does the ladder make with the ground?
Sinx=720Sinx=\frac{7}{20}Sinx=207
Cosx=1420Cosx=\frac{14}{20}Cosx=2014
Tan(42.5)=x300Tan(42.5)=\frac{x}{300}Tan(42.5)=300x
Nauman is flying his kite one afternoon and notices that he has let out the entire 10 ft of string. The angle his string makes with the ground is 40∘. Find horizontal distance covered by his kite?
Sin(55)=x60Sin(55)=\frac{x}{60}Sin(55)=60x
A 40 foot ladder rests against a wall. The angle ladder make with the ground is 50 Find base of the ladder from the wall?
It is done.