Tick the correct answer and justify : In Δ ABC, AB = 6 3 cm, AC = 12 cm and BC = 6 cm. The angle B is : (A) 120° (B) 60° (C) 90° (D) 45°

(C) 90°

Step-by-step explanation:

The computation of the angle b is as followS:

Given that,

AB = 6√3 cm,

AC = 12 cm,

And BC = 6 cm

Now squaring all the above ones  

AB^2 = 108

AC^2 = 144

And, BC62 = 36

AB^2 + BC^2 = AC^2

It shows the Pythagoras theorem.

Therefore the angle B is a right triangle i.e. 90 degrees

Hence, the correct option is C.

answer: the answer is one of

step-by-step explanation:   we are given to write a proper fraction where the whole is divided into an even number of equal parts less than ten, and an odd number of those parts exist.

an even number less than 10 may be one of 2, 4, 6 or 8. so, the whole may be one of these four evens.

now, an odd number of these parts must exist, so the numerator must be an odd number, one of 1, 3, 5 or 7. it cannot be 9 because then the fraction will become improper.

thus, our fraction may be one of the following