if Sin A + sin square is equal to 1 then what is the value of expression cos square A + cos 4 a
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here is your answer. I hope this will help you.
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HEY FRIEND...
sin A + sin²A = 1 ...eq(1)
=> sin A = 1-sin² A
=> sin A = cos² A ...eq(2)
Now given equation
cos² A + cos⁴ A
=sin A + sin²A ...from eq(2)
=1 ...from eq(1)
HOPE IT HELPS...
sin A + sin²A = 1 ...eq(1)
=> sin A = 1-sin² A
=> sin A = cos² A ...eq(2)
Now given equation
cos² A + cos⁴ A
=sin A + sin²A ...from eq(2)
=1 ...from eq(1)
HOPE IT HELPS...
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