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Statement (A) : tan50^(@)gt1 Reason (R...

Statement (A) : `tan50^(@)gt1`
Reason (R ) : For `0^(@)ltthetalt90^(@), tanthetagt1`

A

a)Both A and R are correct and R is the correct explanation of A .

B

b)Both A and R are correct but R is not a correct explanation of A .

C

c)A is correct, R is incorrect .

D

d)A is incorrect, R is correct .

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The correct Answer is:
To solve the given question, we need to analyze the statement (A) and the reason (R) provided. ### Step-by-Step Solution: **Step 1: Evaluate Statement (A)** - The statement (A) claims that \( \tan(50^\circ) > 1 \). - We know that \( \tan(45^\circ) = 1 \) and \( \tan(60^\circ) = \sqrt{3} \approx 1.732 \). - Since \( 50^\circ \) is between \( 45^\circ \) and \( 60^\circ \), and the tangent function is increasing in this interval, we can conclude that \( \tan(50^\circ) \) must be greater than \( \tan(45^\circ) \). - Therefore, \( \tan(50^\circ) > 1 \) is **true**. **Step 2: Evaluate Reason (R)** - The reason (R) states that for \( 0^\circ < \theta < 90^\circ \), \( \tan(\theta) > 1 \). - This is not entirely true because \( \tan(30^\circ) = \frac{1}{\sqrt{3}} \approx 0.577 < 1 \). - Hence, while it is true that \( \tan(\theta) \) is greater than 1 for angles greater than \( 45^\circ \) and less than \( 90^\circ \), it is not true for all angles in the interval \( (0^\circ, 90^\circ) \). - Therefore, the reason (R) is **false**. **Step 3: Conclusion** - Statement (A) is true, and Reason (R) is false. - Thus, the correct option is that the statement is correct but the reason is incorrect. ### Final Answer: - **C**: Statement (A) is correct but Reason (R) is incorrect.
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LUCENT PUBLICATION-TRIGONOMETRIC RATIO OF SPECIFIC ANGLES-Exercise 10A
  1. In DeltaABC, /ABC=60^(@) and AD is perpendicular from A to BC . If AB=...

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  2. If 0^(@)lethetale90^(@) then for any value of theta which one is corre...

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  3. If 0^@ lt theta lt 90^@, then the value of sin theta + cos theta is

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  4. If sin theta+cosec theta=2 then value of sin^(4)theta+cos^(4)theta ?

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  5. If sec theta = (13)/( 5) , then what is the value of (2 sin theta - ...

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  6. If 0^(@)lexle90^(@) and sinx+sqrt(3)cosx=1 , then what is the value of...

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  7. In a right angled DeltaABC if /B=90^(@),AC=2sqrt(5) and AB-BC=2 then w...

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  8. Statement (A) : If tantheta+cottheta=2 , then for all n epsilon N, tan...

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  9. What is the value of expression cos^(2)((pi)/(8))+4cos^(2)((pi)/(4))-s...

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  10. If qcosectheta=p and theta is acute then value of (sqrt(p^(2)-q^(2)))t...

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  11. If 2x^(2)cos 60^(@)-4cot^(2)45^(@)-2tan 60^(@)=0, then what is the val...

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  12. If 13 cos theta=12k-5 where 0lethetale90^(@) and k is an integer then ...

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  13. Statement (A) : tan50^(@)gt1 Reason (R ) : For 0^(@)ltthetalt90^(@),...

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  14. Which one of the following is true ?

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  15. (kcosec^(2)30^(@).sec^(2)45)/(8cos^(2)45^(@).sin^(2)60^(@))=tan^(2)60^...

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  16. If sinalpha+cosbeta=2(o^(@)lebetaltalphale90^(@)) , then sin((2alpha...

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  17. Find the value of cot10^(@).cot20^(@).cot60^(@).cot70^(@).cot80^(@).

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  18. If tantheta=1, then the value of (8sintheta+5cos theta)/(sin^(3)thet...

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  19. What of the value of tan.(pi)/(8).tan.(pi)/(12).tan.(pi)/(4).tan.(3pi)...

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  20. If tan15^(@)=2-sqrt(3) then value of tan15^(@)cot75^(@)+tan75^(@)cot15...

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