
Step-by-step explanation:
The ratio cosine tell us that
- In a right angled triangle, the cosine of an angle is the side adjacent to the angle divided by the hypotenuse of the triangle.
In other words,

The side adjacent to angle a is 9. The hypotenuse is 41.
So

Answer:
the sum of interior angles of a triangle is =180
so.......
80 + 40 + x=180
120 + x= 180
x = 180 - 120
x = 60
60 is an acute angle
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Answer: The correct option is 1 and measure is 40.
Explanation:
It is given that points A, B, and C are on line AC. Angle CBD has a measure of 140°.
Draw a diagram using given information,
From the figure it is noticed that the angle CBD and angle ABD are lies on straight line and lies on the same arc. So, the angle CBD and angle ABD are supplementary angles and their sum is 180 degree.




Therefore, the correct option is 1.
2228.57 square inches..............
Answer:
B = 119! The answer is 119!
Step-by-step explanation: