Math, asked by mamathaamin0, 9 months ago

A fair dice is rolled. Probability of getting a number such that 1 is smaller than or equal to x smaller or equal to 6,
A)0
B)smaller than 1
C)btw and 1
D) 1
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Answered by arnav170
1

Answer:

Answer:

Consider a ∆ABC in which ∠B is a right angle and ∠C is double of ∠A

To Prove: AC = 2BC

Construction: produce CB upto D such that BC = BD & join AD

Proof:

In ∆ ABD & ∆ ABC

BD= BC. (By construction)

∠ABD = ∠ABC ( 90°)

AB = AB (Common)

∆ABD ∆ABC. ( BY SAS)

AD= AC. (CPCT)........(1)

∠DAB = ∠CAB = P ( Let) (By CPCT).......(2)

∠DAC = ∠DAB + ∠CAB

∠DAC= P + P = 2P. ( From eq 2)

∠DAC = ∠ACB ( ∠ACB= 2P)

DC = AD

(Since, sides opposite to equal angles of a triangle are equal)

2BC = AD= AC ( BC= DB from eq 1)

Hence, AC= 2BC

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