TS EAMCET 9-Sep-2020 Shift 1 Solved Paper

Section: Mathematics

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Question : 32 of 160

Marks: +1, -0

If

a=i+(tan‌θ)j+(‌

3

√sin‌

θ

2

)k

and

b=tan‌θ(j−i)−(2√sin‌

θ

2

)k

are orthogonal vectors and c=(sin‌2‌θ)i−2j+2k makes an obtuse angle with X -axis, then θ=

(2n+1)π+Tan−12,n∊Z
nπ−Tan−12,n∊Z
(2n+1)π−Tan−13,n∊Z
(2n+1)π+Tan−13,n∊Z

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