2cos²©-1=1 find out cos⁴©-sin⁴©=?
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Answered by
1
Answer:
therefore sin theta =42
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Answered by
2
Answer:
1
Step-by-step explanation:
2cos²© -1 = COS2©=1
Cos⁴©-Sin⁴©= (Cos²©+Sin²©)(Cos²©-Sin²©)
=>(1)(COS2©)
=>(1)(1)
=> 1
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