Question

If 8tan a equals to 15 then find the value of sec a

Answer 1

Answer:

tana=15/8

tan^2a=225/64

1+tan^2a=225/64 +1=289/64

sec^2a=289/64

so, seca=17/8 Ans.

Answer 2

Step-by-step explanation:

given, 8tan=15

tan=p/b=15/8

p=15, b=8

sec a=b/h=?

by Pythagoras theorem,

h=√p^2+b^2

h=√(15)^2+(8)^2

h=√225+64

h=√289

h=17

sec a=8/15