Answer: i believe the correct formula is A
Step-by-step explanation:
Answer:
In a right angle triangle ABC, at C = 90 degree as shown below
AC =BC and AB = 4 units
Let AC=BC= x units
Using Pythagoras theorem:
then substitute the given values we get;
or
Divide both sides by 2 we get;
Simplify:
Therefore, each of the legs would be and
Solve for x by simplifying both sides of the equation, then isolating the variable.
x = -4
Hope this helps! :)
Happy New Years!
Answer:
A. 25, obtuse
Step-by-step explanation:
By exterior angle theorem:
2x° = 30° + 20°
2x° = 50°
x° = 50°/2
x° = 25°
x = 25
Type of triangle: Obtuse