Question

In a right triangle right angled at B, if 4 cosec A = 5 then verify that 1 + tan²A = sec²A.​

Answer 1

Answer:

from the question we get cosec A=5/4

Step-by-step explanation:

by triangle we get,tan A =4/3,,secA=5/3

first finding L.H.S value which is 1+tan^2 A

L.H.S

1+(4/3)^2

1+16/9

25/9

Now R.H.S

(5/3)^2

25/9

which is L.H.S value

therefore L.H.S= R.H.S