what is the value cos square 67 - sin square 23
Answers
Answered by
31
Heya user
Here is your answer !!
cos²67° - sin²23°
= cos²67° - sin² ( 90 - 67 )°
= cos²67° - cos²67°
= 0 ............ [Ans]
Hope it helps !!
Here is your answer !!
cos²67° - sin²23°
= cos²67° - sin² ( 90 - 67 )°
= cos²67° - cos²67°
= 0 ............ [Ans]
Hope it helps !!
Answered by
4
As we know that,
Cos (90°-∅) = sin ∅
In given equation
cos²67 - sin²23
= cos²(90°-23) - sin²23
= sin²23 - sin²23
= 0
Hope it helps
Cos (90°-∅) = sin ∅
In given equation
cos²67 - sin²23
= cos²(90°-23) - sin²23
= sin²23 - sin²23
= 0
Hope it helps
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