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Evaluate : (tan20^@)/(cot70^@) +(cot50^@...

Evaluate : `(tan20^@)/(cot70^@) +(cot50^@)/(tan40^@)+(sin^2 20^@+sin^2 70^@)/(sinthetacos(90-theta)+costhetasin(90-theta)` .

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MBD-INTRODUCTION TO TRIGONOMETRY-EXERCISE
  1. Without using Trigonometric tables, evaluate:- 2(cos67^@)/(sin23^@)-(t...

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

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  3. Evaluate : (tan20^@)/(cot70^@) +(cot50^@)/(tan40^@)+(sin^2 20^@+sin^2 ...

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

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  5. Evaluate : tan 15^@ tan25^@tan60^@tan65^@tan75^@ .

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  6. Evaluate : tan65^@/cot25^@ .

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  7. If sin 3A = cos (A- 26^@) where 3A is an acute angle, find the value o...

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

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

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

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

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

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

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

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

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

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

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

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

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

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