Answer:
m∠A=90°, m∠B=60°, m∠C=30°
Step-by-step explanation:
step 1
Verify if the triangle ABC is a right triangle
Applying the Pythagoras theorem

----> is true
therefore
Is a right triangle
m∠A=90°
Find the measure of angle C
sin(C)=AB/BC
substitute
sin(C)=6/12=1/2
so
m∠C=30°
Find the measure of angle B
we know that
m∠C+m∠B=90°------> by complementary angles
so
m∠B=90°-30°=60°
You can get the app Air Math I have the app and it helps a lot
Answer:
62 degrees
Step-by-step explanation:
180 - (65 + 53) =
180 - 118 =
62 degrees
Hope that helps!
Answer:
(x-2),(x+1)
Step-by-step explanation: