1
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a triangle $A B C$, if $a

A

3

B

4

C

2

D

6

2
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a triangle $A B C$, if $c=9, s=10$ and $\Delta=10 \sqrt{2}$ then $b\left[1+\sqrt{2} \tan \left(\frac{A-B}{2}\right)\right]=$

A

$a\left[1-\sqrt{2} \tan \left(\frac{A-B}{2}\right)\right]$

B

$C\left[1-\sqrt{2} \tan \left(\frac{A-B}{2}\right)\right]$

C

$a\left[\sqrt{2} \tan \left(\frac{A-B}{2}\right)-1\right]$

D

$C\left[\sqrt{2} \tan \left(\frac{A-B}{2}\right)-1\right]$

3
TS EAMCET 2020 (Online) 11th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

In a $\triangle A B C, \cot A+\cot B+\cot C=$

A

$\frac{a^2+b^2+c^2}{\Delta}$

B

$\frac{a+b+c}{4 \Delta}$

C

$\frac{a^2+b^2+c^2}{4 \Delta}$

D

$\frac{a^2+b^2+c^2}{2 \Delta}$

4
TS EAMCET 2020 (Online) 11th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The perimeter of a $\triangle A B C$ is 6 times the arithmetic mean of the sine of its angles. If its side $B C$ is of unit length, then $\angle A=$

A

$\pi / 6$

B

$\pi / 3$

C

$\pi / 2$

D

$\pi$

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