This is a question in maths chapter height and distance and I can’t answer this please help??
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Prove this standard trigonometric identity: Sin² A=1-cos²A
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I had a doubt for the value of iota . But I should know as I am in class 11 .
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Value of radian is asked in a very important chapter of class 11 which is arc and arc length.
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I am preparing for NDA examination but I have studied from ncert (cbse) school .So somebody please guide me.
