In the diagram below, angle BAC = 34°. Find the following angles, giving reasons for your answers.
a) angle ABC
b) angle BCA

a) 90°

b) 56°

Step-by-step explanation:

If we connect O with B to get two isosceles triangles: ΔAOB and ΔBOC

∠BOC= is central angle ans is twice as ∠BAC, so equals to 2*34°= 68°

Then ∠BCA= (180°- 68°)/2= 56°

∠ABC= ∠ABO+∠CBO= 34°+56°= 90°

-4, -2, 1, 4

step-by-step explanation:

domain = x values

range = y values