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Express cos O/ in terms of tan O/ ....

Express ` cos O/ ` in terms of ` tan O/ `.

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VGS PUBLICATION-BRILLIANT-TRIGONOMETRY-EXERCISE
  1. Evaluate (sin 58^o / cos 32^o) + (tan 42^o/ cot 48^o)

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  2. sin A = 1 / sqrt 2 tan B =1 sin (A + B) =

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  3. Express cos O/ in terms of tan O/ .

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  4. If cos O/ = 1/(sqrt2) , then find the value of 4 + cot O/ .

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  5. Is it correct to say that sin O/ = cos (90 - O/)? why?

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  6. Find the value of tan 2A if cos 3A = sin 45^o .

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  7. In a right triangle ABC, right angled at C in which AB = 13cm, BC = 5c...

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  8. cosec 39^(0), sec 51^(0) - tan 51^(0). Cot 39^(0) విలువను గుణించండి.

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  9. Ravi says “the value of tan 0^o tan 1^o tan 2^o……. tan 89^o is zero’...

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  10. Prove that 4tan^2 45^o - cosec ^2 30^o + cos^2 30^o = 3/4

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  11. Using the figure given of triangle ABC prove that sin^2 O/ + cos^2 O/...

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  12. Show that sqrt (sec^2 O/ + cosec^2 O/) = tan O/ + cot O/

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  13. Prove that sqrt ((1 - sin O/)/(1 + sin O/ )) = sec O/ - tan O/

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  14. If sin (A-B) =(1)/(2) ,cos (A+B) =(1)/(2) ,where 0^@ lt A +B lt 90 ^(...

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  15. If x = a sec O/ and y = b tan O/ then prove that x^2/a^2 - y^2/b^2...

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  16. Prove that sqrt((cosec A + 1)/(cosec A - 1)) - sqrt((cosec A - 1)/(co...

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  17. If A, B, C are interior angle of triangle ABC then show that sin ((...

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  18. What can you say about the values of sin A and cos A as the measure of...

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  19. Find measure of the angle A and B, if cos ( A - B ) = sqrt3/2 and sin ...

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  20. tan^(2) 60^(0) + cot^(2) 30^(0) //sin^(2) 30^(0) + cos^(2) 60^(0) విలు...

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