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The radius of the circumcircle of an iso...

The radius of the circumcircle of an isosceles triangle PQR is equal to `PQ(=PR)`. Then the angle P is

A

` 75^(@) `

B

` 105 ^(@) `

C

` 90 ^(@)`

D

` 120 ^(@) `

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The correct Answer is:
D
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AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
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  12. The smallest angle of the triangle whose sides are 6+sqrt12,sqrt48,sqr...

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  13. In DeltaABC, " if" (1)/(a+c)+(1)/(b+c)=(3)/(a+b+c) then show that C=...

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  14. If DeltaABC, ifangleC=(pi)/(3), "then"(3)/(a+b+c)-(1)/(a+c) equals

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  15. If C=60^(@), " then show that"(a)/(b+c)+(b)/(c+a)=1

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  16. If angles A,B,C are in A.P . , then 2cos (( A-C)/( 2))=

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  17. If C = 60 ^(@) " then "= ( b)/( c^(2) -a^(2)) + ( a) /( c^(2)- b^(2...

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  18. In an acute angled Delta ABC , if a^(4) + b^(4) +c^(4) = 2c^(2)...

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  19. In Delta ABC, if (2 cos A)/a+ (cos B)/b+ (2 cos C)/c=a/(bc)+b/(ca), th...

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