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IfA+B+C = 180^(@) then sumtan(A)/(2)tan(...

IfA+B+C = `180^(@)` then `sumtan(A)/(2)tan(B)/(2)`=

A

0

B

1

C

2

D

3

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HIMALAYA PUBLICATION-MEASUREMENT OF ANGLES, TRIGONOMETRIC RATIOS AND RELATION BETWEEN SIDES AND ANGLES OF A TRIANGLE-QUESTION BANK
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