Question

prove that (1+cotA+tanA) (sinA-cosA) = sec^3-cosec^3÷sec^2×cosec^2

Answer 1

EXTRA INFORMATION:-

1) cos2 A + sin2 A = 1.

2) cos2 A =1 - sin2 A.

3) sin2 A =1 - cos2 A.

4) sec2 A - tan2 A = 1.

5) 1 + tan2 A = sec2 A.

 6) tan2 A = sec2 A – 1.

7) cosec2 A - cot2 A = 1.

8) cot2 A + 1 = cosec2 A.

9) cot2 A = cosec2 A – 1 .

10) sec A - tan A = 1sec A + tan A.

11) cosec A - cot A = 1cosec A + cot A.

Answer 2

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