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IF A+B+C=270 THEN FIND THE VALUE OF SIN(2A)-SIN(2B)+SIN(2C)=??

IF A+B+C=270 THEN FIND THE VALUE OF 
SIN(2A)-SIN(2B)+SIN(2C)=??

Grade:12th pass

2 Answers

PK NAIN
87 Points
6 years ago
put A=B=120 and C=30
PK NAIN
87 Points
6 years ago
first apply the formula and then check by putting these values

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