Question

plz send me answers i have exams

Answer 1

Answer:

Question 7:-

1. -1 is the coefficient

2. 0 as x^2 is not present in the expression.

Question 8:-

If angle PQR=PRQ then,

180-PQR= 180-PRQ

angle PSQ=PRT

It is because they are in linear pair.

Question 9:-

By theorem, the angle subtended at the center is double the angle at any other place in the circle.

So, X= 2*60= 120

Question 10:-

Let the angle be x

Then, 3x+5x+9x+13x=360.

Angle Sum Property

So, 30x = 360

X = 12

So, greatest angle is 13*12= 156.

Question 11:-

Join the diagonal QS.

If angle is 50.

If PQ=PS,

So, angle PSQ=PQS

50+PQS+PQS=180

PQS+PSQ=130

2 PQS= 130

PQS=65

Angle S=Q

So, It means that angle S is 130.

Angle RQS = S/2 =65

Question 12:-

AD = BC. [Given]

Angle A = Angle B. [Each of 90]

Angle C = Angle D. [Alternate angles]

By ASA, triangle AOD is congruent to triangle BOC.

By CPCT, BO = AO

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