Question

The number of principal solution of the equation 3tan^2a-10tan^2a+3=0 is​

Answer 1

Step-by-step explanation:

$- 7 { \tan(a ) }^{2} + 3 = 0$

-7tan^2a=-3

${ \tan(a ) }^{2} = - 3 \div - 7$

tan a=√(3/7)