Assertion ( {A}): If \\alpha=12^\circ, \\beta=15^\circ, \\gamma=18^\circ then \tan 2 \\alpha \tan 2 \\beta+\tan 2 \\beta \tan 2 \\gamma +\tan 2 \\gamma \tan 2 \\alpha =1 Reason ( {R}): In \\Delta {ABC}, \tan \frac{A}{2} \tan \frac{B}{2}+\tan \frac{B}{2} \tan \frac{C}{2} +\tan \frac{C}{2} \tan \frac{A}{2}=1 Which of the following is true?

Correct Answer is : Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are true and (R) is not correct explanation of (A)

TS EAMCET 4 May 2018 Shift 2 Solved Paper

Section: Mathematics

Question : 21 of 160

Marks: +1, -0

Assertion (A): If α=12°,β=15°,γ=18° then
tan‌2‌α‌tan‌2‌β+tan‌2‌β‌tan‌2‌γ +tan‌2‌γ‌tan‌2‌α=1
Reason (R): In ΔABC,
tan‌

‌tan‌

+tan‌

‌tan‌

+tan‌

‌tan‌

=1
Which of the following is true?

Go to Question:

Prev Question

Next Question