TS EAMCET 11-Sep-2020 Shift 1 Solved Paper

Section: Mathematics

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Question : 22 of 160

Marks: +1, -0

If A+B+C=60°, then cos(30°-A)+cos(30°-B)+cos(30°-C)+sin(A+B+C)=

4cos
A
2
cos
B
2
cos
C
2
4sin
A
2
sin
B
2
sin
C
2
4cos
A
2
cos
B
2
sin
C
2
4cos
A
2
sin
B
2
cos
C
2

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