0.363636... divide 4 with 11
The two lines are tangent to the circle at points that are 180 degrees apart.
First let's find the angles a and b.
We have then:
sin a = 4/5
a = Asin (4/5)
a = 53.13 degrees.
cos b = 5/13
b = Acos5 / 13
b = 67.38 degrees.
We now calculate cos (a + b). To do this, we replace the previously found values:
cos ((53.13) + (67.38)) = - 0.507688738
Answer:
-0.507688738
Note: there is another way to solve the problem using trigonometric identities.
Answer:2.5
Step-by-step explanation:
5 is a odd number which means it's a little harder to divide but when you do, you get 2.5
1
2.5
2.5
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5.0 = 5