## (d) POR is an isosceles triangle with PQ = PR, and angle QPR **”. Angle POR = (2x +30)” OR – (p+3)cm PO = (2+3) cm Find

Question

(d) POR is an isosceles triangle with PQ = PR, and angle QPR **”.

Angle POR = (2x +30)”

OR – (p+3)cm

PO = (2+3) cm

Find an expression for the perimeter of the triangle in terms of p,

giving your answer in its simplest form.

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Math
3 months
2021-11-10T19:28:26+00:00
2021-11-10T19:28:26+00:00 1 Answer
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## Answers ( )

Answer:1) It is given that line AB is tangent to the circle at A.

∴ ∠CAB = 90º (Tangent at any point of a circle is perpendicular to the radius throught the point of contact)

Thus, the measure of ∠CAB is 90º.

(2) Distance of point C from AB = 6 cm (Radius of the circle)

(3) ∆ABC is a right triangle.

CA = 6 cm and AB = 6 cm

Using Pythagoras theorem, we have

BC2=AB2+CA2⇒BC=62+62−−−−−−√ ⇒BC=62–√ cm

Thus, d(B, C) = 62–√ cm

(4) In right ∆ABC, AB = CA = 6 cm

∴ ∠ACB = ∠ABC (Equal sides have equal angles opposite to them)

Also, ∠ACB + ∠ABC = 90º (Using angle sum property of triangle)

∴ 2∠ABC = 90º

⇒ ∠ABC = 90°2 = 45º

Thus, the measure of ∠ABC is 45º.

Step-by-step explanation:i hope this answer is useful

and this question is too good