Question

• In the figure 2.22, M is the
midpoint of QR. PRQ = 90°.
Prove that, PQ = 4PM² - 3PR²

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Answer 1

Answer:

PQ =4$PM^{2}$ - 3$PR^{2}$

Step-by-step explanation:

this is what i got i guess ths questio is wrong

Answer 2

Question :-

In figure, ∠PQR = ∠PRQ, then prove that ∠PQS = ∠PRT.

Answer :-

ST is a straight line.

∴ ∠PQR + ∠PQS = 180° …(1) [Linear pair]

Similarly, ∠PRT + ∠PRQ = 180° …(2) [Linear Pair]

From (1) and (2), we have

∠PQS + ∠PQR = ∠PRT + ∠PRQ

But ∠PQR = ∠PRQ [Given]

∴ ∠PQS = ∠PRT

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