what is the value of cos²31° - sin square 59 degrees
Answers
Answered by
2
Answer:
67.8
Step-by-step explanation:
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Answered by
2
Answer:
0
Step-by-step explanation:
cos²31° - sin² 59°
= cos²31° - sin² 59°
= cos²31° - sin² ( 90 - 31 )
= cos²31° - cos²31°
= 0
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