prove trigonometry question. please help me.
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plz refer to the solve image thanks
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In LHS's numerator and denominator multiply by √1 - sin∅ to get
√(1-sin∅)² / √ 1 - sin²∅
= √(1-sin∅)² /√ cos²∅
= (1-sin∅) / cos ∅
= 1 / cos ∅ - sin ∅ / cos ∅
= sec ∅ - tan ∅ ■
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