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Without using Trigonometric Tables evaluate the following :- `sec70^@sin20^@-cos20^@cosec70^@` .

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Without using Trigonometric Tables evaluate the following :- (sec50^@sin40^@+cos40^@cosec50^@)

Without using Trigonometric Tables evaluate the following :- (sec^2 54^@-cot^2 36^@)/(cosec^2 57^@-tan^2 33^@) +2sin^2 38^@ sec^2 52^@-sin^2 45^@ .

Without using Trigonometric Tables evaluate the following :- sec^2 10^@-cot^2 80^@+(sin15^@cos75^@+cos15^@sin75^@)/(costhetasin(90^@-theta)+sinthetacos(90^@-theta) .

Without using Trigonometric Tables evaluate the following :- ((tan20^@)/(cosec70^@))^2+((cot20^@)/sec70^@)+2tan15^@tan37^@tan53^@tan60^@tan75^@ .

Without using Trigonometric Tables evaluate the following :- (2cos65^@)/(sin25^@)-(tan20^@)/(cot70^@)-sin90^@+tan5^@tan35^@tan60^@tan55^@tan85^@ .

Without using Trigonometric Tables evaluate the following :- 2[(cos^2 20^@+cos^2 70^@)/(sin^2 25^@+sin^2 65^@)]-tan45^@+tan13^@tan23^@tan30^@tan67^@tan77^ @

Without using Trigonometric Tables evaluate the following :- (cos58^@)/(sin32^@)+(sin22^@)/(cos68^@)-(cos38^@ cosec52^@)/(tan18^@tan35^@tan60^@tan72^@tan55^@) .

Without using Trigonometric Tables evaluate the following :- (2cos67^@)/(sin23^@)-(tan40^@)/(cot50^@)-cos0^@+tan15^@tan25^@tan60^@tan65^@tan75^@ .

Without using Trigonometric Tables evaluate the following :- (2sin68^@)/(cos22^@)-(2cot15^@)/(5tan75^@)-(3tan45^@tan20^@tan40^@tan70^@tan50^@)/5 .

Without using Trigonometric Tables evaluate the following :- (1/2sec^2 60^@-1/2tan^2 60^@)/(4[cos^2 29^@+cos^2 61^@] .

MBD-INTRODUCTION TO TRIGONOMETRY-EXERCISE
  1. If sin 3A = cos (A- 26^@) where 3A is an acute angle, find the value o...

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  2. Evaluate : (cos80^@)/(sin10^@)+cos59^@ cosec31^@ .

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  3. Without using Trigonometric Tables evaluate the following :- sec70^@si...

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  4. Without using Trigonometric Tables evaluate the following :- (2cos38^@...

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  5. Without using Trigonometric Tables evaluate the following :- (cosec^2 ...

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  6. Without using Trigonometric Tables evaluate the following :- (cos35^@...

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  7. Without using Trigonometric Tables evaluate the following :- (cos58^@)...

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  8. Without using Trigonometric Tables evaluate the following :- ((tan20^@...

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  9. Without using Trigonometric Tables evaluate the following :- 3((sin36^...

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  10. Without using Trigonometric Tables evaluate the following :- (tan 48)/...

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  11. Without using Trigonometric Tables evaluate the following :- sinthetac...

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  12. Without using Trigonometric Tables evaluate the following :- (2cos67^@...

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  13. Without using Trigonometric Tables evaluate the following :- (2cos65^@...

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  14. Without using Trigonometric Tables evaluate the following :- 2[(cos^2 ...

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  15. Without using Trigonometric Tables evaluate the following :- (sec50^@...

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  16. Without using Trigonometric Tables evaluate the following :- (1/2sec^2...

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  17. Without using Trigonometric Tables evaluate the following :- (2sin68^@...

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  18. Evaluate : (sin70^@)/(cos 20^@)+(cosec36^@)/(sec54^@)-(2cos43^@cosec47...

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  19. Without using Trigonometric Tables evaluate the following :- (sin^2 35...

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  20. Without using Trigonometric Tables evaluate the following :- (sin^2 35...

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