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Without using Trigonometric Tables evalu...

Without using Trigonometric Tables evaluate the following :- `sinthetacostheta-(sinthetacos(90^@-theta) costheta)/(sec(90^@-theta))-(costhetasin(90^@-theta)sintheta)/(cosec(90^@-theta))` .

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cos(90^@-theta)=sintheta .

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

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Prove the following identity : sin theta cot theta+ sin theta cosec theta=1 + cos theta .

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Simplify the following : sin(90^@+ theta) tan (270^@ +theta) cot (90^@+theta) cosec (270^@+theta) .

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MBD-INTRODUCTION TO TRIGONOMETRY-EXERCISE
  1. Evaluate : (sin70^@)/(cos 20^@)+(cosec36^@)/(sec54^@)-(2cos43^@cosec47...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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