help I want to summit tommorrow
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Step-by-step explanation:
30.( sec A + tan A)(1-sin A)
=secA - sinA/cosA + tanA - tanAsinA
=secA - tan A + tanA - tanAsinA
=1/cosA - sin^2A/cosA
=1-sin^2A/cosA
=cos^2A/cosA
=cosA
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