Question

cos^2 73 + cos^2 47 - sin^2 43 + sin^2 107

Answer 1

Answer:

here is your answer........

Explanation:

• cos^2 73° + cos^2 47° - sin^2 43° + sin^2 107°
• cos^2 73° + sin^2 ( 90 - 47 ) - sin^2 43° + cos^2 ( 90 - 107 )
• cos^2 73° + sin^2 43° - sin^2 43° - cos^2 27°
• cos^2 73° - cos^2 17°