Answer:
The answers are given below.
Step-by-step explanation:
8) A) acute 9) C) acute 10) D) right 11) B) acute
12) A) straight 13) A) acute 14) D) right 15) C) ∠L
16) B) ∠HIG 17) B) ∠DEC 18) B) ∠K 19) C) ∠G
20) C) ∠KLJ
We know that ,
1. when 0° < θ < 90°, θ is acute.
2. when θ = 90° θ is right
3. when 90° < θ < 180°, θ is obtuse
4. when θ = 180° θ is straight
Answer:
Step-by-step explanation:
31.32
Step-by-step explanation:
c/(c - 5) = 4/(c - 4)
By Cross-multiplying,
We have c(c - 4) = 4(c - 5).
=> c² - 4c = 4c - 20
=> c² - 8c + 20 = 0
Since the discriminant is negative,
there are no real solutions for c.
However, there exist complex solutions for c.
Using the Quadratic Formula,
c = [8 ± √(-16)]/2
=> c = 4 ± √(-4)
=> c = 4 ± 4i or c = 4(1 ± i).
