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Evaluate : 3 cos 80^(@)cosec 10^(@)+2s...

Evaluate :
`3 cos 80^(@)cosec 10^(@)+2sin 59^(@)sec 31^(@)`

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Evaluate : (i) 3 cos 80^(@) "cosec 10"^(@) + 2 sin 59^(@) sec 31^(@) (ii) (cos 70^(@))/(sin 20^(@)) + (cos 59^(@))/(sin 31^(@)) - 8 sin^(2) 30^(@) (iii) "cosec" (65^(@) + A) - sec(25^(@) - A)

Evaluate : (sin 80^(@))/(cos 10^(@))+sin 59^(@)sec 31^(@)

Evaluate 3 cos 80 ^(@) cosec 10 ^(@) + 2 cos 59 ^(@) cosec 31 ^(@)

Evaluate cos 40 ^(@) cosec 50 ^(@)+ sin 50 ^(@) sec 40 ^(@)

Evaluate: (sec 75^(@))/(cosec 15^(@))

With out using tables, evaluate : 4 tan 60^(@) sec 30^(@) + (sin 31^(@) sec 59^(@) + cot 59^(@) cot 31^(@))/(8 sin^(2) 30^(@) - tan^(2) 45^(@))

Evaluate : (cos 70^(@))/(sin 20^(@))+(cos 59^(@))/(sin31^(@))-8sin^(2)30^(@)

Evaluate : (cos 70^(@))/(sin 20^(@))+(cos 59^(@))/(sin31^(@))-8sin^(2)30^(@)

Evaluate : (sin 35^(@) cos 55^(@) + cos 35^(@) sin 55^(@))/ (cosec^(2) 10^(@) - tan^(2) 80^(@))

Evaluate : (i) cosec 82^(@)-sec8^(@) (ii) sec 70^(@)sin 20^(@)+cos 20^(@)cosec 70^(@)

ICSE-MATHEMATICS-2013-SECTION- B
  1. Evaluate : 3 cos 80^(@)cosec 10^(@)+2sin 59^(@)sec 31^(@)

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  2. Solve the following inequation, write the solution set and represent i...

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  3. Mr. Britto deposits a certain sum of money each month in a Recurring D...

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  4. Salman buys 50 shares of face value 100rs available at 132rs (i) Wha...

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  5. Salman buys 50 shares of face value 100rs available at 132rs (i) Wha...

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  6. Salman buys 50 shares of face value 100rs available at 132rs (i) Wha...

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  7. Show that, sqrt((1-"cos"A)/(1+"cos"A))=("sin"A)/(1+"cos"A)

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  8. In the given circle with centre O, angleABC=100^(@),angleACD=40^(@) an...

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  9. Given below are the entries in a Saving Bank A/c pass book : Cal...

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  10. In DeltaABC, A (3, 5), B (7, 8) and C(1, -10). Find the equation of th...

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  11. A shopkeeper sells an article at the listed price of Rs 1,500 and the ...

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  12. In the igure given, from the top of a building AB = 60 m high, the ang...

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  13. In the figure given, from the top of a building AB = 60 m high, the an...

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  14. Find x and y, if : [{:(,x,3x),(,y,4y):}] [{:(,2),(,1):}]=[{:(,5),(,12)...

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  15. A solid sphere of radius 15 cm is melted and recast into solid right c...

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  16. Find the value of 'p'. If the following quadratic equations have equal...

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  17. In the figure alongside, OAB is a quadrant of a circle. The radius OA ...

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  18. A box contains some black balls and 30 white balls. If the probability...

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  19. Find the mean of the following distribution by step deviation method :

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  20. Using a rular and compass only : (i) Construct a triangle ABC with t...

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  21. The marks obtained by 120 styudents in a test are given below : D...

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