Question

If A is the acute angle find cosa = 4/5
then value of sec²A + tan²A​

Answer 1

Answer:

34/16

Step-by-step explanation:

i think it's the correct answer

Answer 2

Answer:

Step-by-step explanation:

Imagine a Triangle with sides 4 and 5.

where 4 is the sides that is horizontal with the x axis and 5 be the hypotenuse. then angle A be the angle between sides 4 and 5.

Since secA=1/cosA therefore secA^2=(5/4)^2

and tanA^2=(3/4)^2

Thus secA^2 + tanA^2 = 34/16 = 17/8