Cos^2A+cos^2B-sin^2C=-2cosA.cosB.sinC?
2 Answers
If
Below.
Explanation:
Let we take the values of
Multiplying LHS by
Using the formula of
Putting the value of equation (i) in
Resolving this equation further,
This gives the final output as,
If
Below.
Let we take the values of
Multiplying LHS by
Using the formula of
Putting the value of equation (i) in
Resolving this equation further,
This gives the final output as,