Question

how do you find the secant of a triangle

Answer 1

secant a= 1/cos a
when you have cos a you will have scant a
i give you an example
suppose a is q2 and sin a=3/5
find secant a
cos^2 a+sin ^2 a=1
cos ^2a+9/25=1
cos ^a=16/25
be careful about q2 cos<0 ---> cos a=-4/5
then secant a= 1/cos a=1/(-4/5)=-5/4