(secA + tanA) (1-sinA)
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Answer:
cosA
Step-by-step explanation:
(secA + tanA)(1-sinA)
=secA - secA*sinA + tanA - tanA*sinA
=secA - sinA/cosA + tanA - sinA*sinA/cosA
=secA - tanA + tanA - sin^2A/cosA
=1/cosA - sin^2A/cosA
=1 - sin^2A/cosA
=cos^2A/cosA
=cosA
Hopefully I think this will help you.
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