Question

if tan a equal to 1 by 2 find the value of 2 sec a by 1 + tan square A​

Answer 1

Answer:

4/√5

Step-by-step explanation:

Given tan a=1/2=p/b

then h=√(p^2+b^2)=√(1+4)=√5

2sec a/(1+tan^2a)=(2×√5/2)/(1+1/4)=4/√5