Answer :

SinA can be expressed in terms of sec A as:

sinA = √sin2A

sin A = √(1 -cos2A)


Now,

cos A can be expressed in terms of secA as:

cosA =

tanA can be expressed in the form of sec A as:
As, 1 + tan2A = sec2A

⇒ tan A =± √(sec2A -1)      
As A is acute angle,
And tan A is positive when A is acute,
So,
tan A = √(sec2A -1) 
cosec A can be expressed in the form of sec A as:

cosec A =

cot A can be expressed in terms of sec A as:

cot A =
as, 1 + tan2A = sec2A
=

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