Question

(cosecA-sinA)(secA-cosA)(tanA-cotA)​

Answer 1

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Answer 2

Step-by-step explanation:

(CosecA-SinA) (SecA-CosA) (tanA-CotA)

(1-Sin²A)/SinA * (1-Cos²A)/CosA *(tan²A-1)/tanA

Cos²A/SinA * Sin²A/CosA * (tan²A-1)/tanA

SinA*CosA*( Sin²A-Cos²A)/Cos²A * CosA/SinA

SinA*CosA * (Sin²A-Cos²A)/SinA*CosA

(Sin²A - Cos²A)

(1 - 2Cos²A)

= -Cos2A