Question

(sec A+tan A)(1-sin A)​

Answer 1

Answer:

(secA + tanA)(1-sinA) = cosA

Step-by-step explanation:

Given: (secA + tanA)(1-sinA)

= $(\frac{1}{cosA} + \frac{sinA}{cosA} )$ (1-sinA)

= (1+sinA)(1-sinA) / cosA

= (1-sin²A) / cosA

= cos²A / cosA

= cosA

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