TS EAMCET 10-Sep-2020 Shift 1 Solved Paper

Section: Mathematics
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Question : 22 of 160
 
Marks: +1, -0
Assertion (A): If A=15°, B=17° and C=13° then
cot2A+cot2B+cot2C=cot2Acot2Bcot2C
Reason (R): In a ΔPQR,
Tan
P
2
T
a
n
Q
2
+Tan
Q
2
T
a
n
R
2
+Tan
P
2
T
a
n
R
2
=1
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