What is the value (cos square 2 67°-sin square 2 23°.
Answers
Answered by
0
= cos²67° - sin²23°
= cos²67° - cos²67°
= 0
= cos²67° - cos²67°
= 0
Answered by
0
={cos^2(90°-23°)-sin^2 23°}
=(sin^2 23° - sin^2 23°)
=0 Ans.☺️☺️☺️
=(sin^2 23° - sin^2 23°)
=0 Ans.☺️☺️☺️
Similar questions