Question

10.54
tan (90° - A) cot A -COS A = 0
cosec? A​

Answer 1

Step-by-step explanation:

tan(90°-A)cotA-cosA=0

cot^2A-CosA=0

cos^2A/sin^2A=cosA

cosA/sin^2A=1

tanA×cosecA=1

cosecA=1/tanA

cosecA=cotA