Please help me to do it
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Step-by-step explanation:
sin²1°+sin²3°+sin²5°+.......+sin²(90°-5)+sin²(90-3)+sin²(90°-1)
=sin²1°+cos²1°+sin²3°+cos²3°+sin²5°+cos²5°+......+sin²45°+cos²45°
=45
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