Let A=[ \table \cos\\alpha,-\sin \\alpha;\sin\\alpha,\cos\\alpha],(\\alpha \inR) such that A^32=[\table 0,-1;1,0] then a value of \\alpha is [8 Apr 2019 Shift 1]

JEE Main 8 Apr 2019 Paper 1 Solved Paper

Section: Mathematics

Question : 71 of 90

Marks: +1, -0

Let A=[

cos‌α	−sin‌α
sin‌α	cos‌α

],(α∈R) such that A32=[

0	−1
1	0

] then a value of α is

[8 Apr 2019 Shift 1]

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cos‌2‌α	−sin‌2‌α
sin‌2‌α	cos‌2‌α

cos‌3‌α	−sin‌3‌α
sin‌3‌α	cos‌3‌α

cos‌32‌α	−sin‌32‌α
sin‌32‌α	cos‌32‌α