Maths Exercises
Español
web counter
                         User: desconectar
 
Documento sin título
 
Maths Exercices
Trigonometric ratios: Cosine

Cosine: The cosine of an angle in a right triangle equals the adjacent side divided by the hypotenuse.

cos θ = adj
hyp
 

Find Cos A and Cos B  
Using the Pythagorean Theorem, the missing leg must be 15, then
Cos A = 15
17		       and   Cos B = 8
17		    

Look at the following right triangle, where:
a = 4
b = 7
Find the cosine of angle A

The cosine of angle A s =
(round the solution to hundredths)