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Show that, (cot 54^@)/(tan 36^@)+(tan20^...

Show that, `(cot 54^@)/(tan 36^@)+(tan20^@)/(cot 70^@)-2=0`

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Find the value of cot54^@/(tan36^@)+tan20^@/(cot70^@)

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UNITED BOOK HOUSE-SOLPARA HIGH SCHOOL-EXERCISE
  1. Three variable x,y,z such that y+z-x is a constant and if (z+x-y)(x+y-...

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  2. Find the area of a quadrant of a circle whose circumference is 22 cm.

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  3. If a,b,c,d are in continued proportion then show that (b-c)^2+(c-a)^2+...

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  4. Answer any one question : Prove that angles in the same segment of a c...

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  5. Prove that opposite angles of a cyclic quadrilateral are supplementary

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  6. Prove that two equal chords are equidistant from the centre of the cir...

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  7. Prove that cyclic trapezium is isoscles trapezium and the length of it...

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  8. Draw a traingle ABC whose BC = 6cm, CA = 5.5 cm and AB = 4.5. cm. Draw...

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  9. Draw a circle with radius 2.6 cm in length. Draw two tangents to the c...

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  10. Sum of two angles is 135^@ and their difference is pi^c/12. Find the s...

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  11. Find the value of: (tan 60^@- tan 30^@)/(1+ tan60^@ tan 30^@)+cos 60^@...

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  12. Show that, (cot 54^@)/(tan 36^@)+(tan20^@)/(cot 70^@)-2=0

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  13. A passenger of an aeroplane observes that Howrah station is at one sid...

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  14. From the two points on the same straight line with the foot of a tower...

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  15. External diameter of a hemispherical wooden pot is 10 cm and its thick...

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  16. The length of two sides adjacent to right angles of a right angled tri...

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  17. If the length of radius of a sphere is increased by 50% , then find ho...

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  18. Find the mean of obtained marks of the students from the following cum...

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  19. Find the median of the following data

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  20. Find the mode of the following data

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