If the vertical angle of a right circula...

If the vertical angle of a right circular cone be `alpha` and its radius of base be r unit, then the height of the cone will be ___________.

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The correct Answer is:

`r cot alpha`

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CALCUTTA BOOK HOUSE-RIGHT CIRCULAR CONE -Exercise 1

The ratio of the diameters of the bases of two right circular cones is...
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If the height of a right circular cone be 4.8 cm and its diameter of b...
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If the circumference of the base of a right circular cone be (264)/(7)...
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The radius of base and height of a right cone are equal . Keeping radi...
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If the total surface area of a right circular cone of radius 3cm be 24...
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The curved surface area of a right circular cone of height h unit and...
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If the whole surface area of a right circular cone be A1 sq- unit andi...
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If the radius of base and height of a right circular cone be increased...
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The slant height of a right circular cone of radius of base 4 unit and...
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The curved surface area of a right circular cone of height 3 times of ...
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The length of slant height of a right circular cone is always greater ...
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Between the 2 surfaces of a closed right circular cone, the one is pla...
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The base of a right circular cone may not be circular.
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if the height and the radius of base of a right circular cone be equal...
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The volume of a right circular cone of radius of base r unit and of he...
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If the vertical angle of a right circular cone be alpha and its radius...
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If a right- angled triangle is rotated at an angle of with its hypote...
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The line segment joining the vertex of a right circular cone and the c...
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The curved surface area of a right circular cone = xx slant height .
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The whole surface area of a right circular cone = half of the circumfe...
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