If cos (50 degrees) = a, express tan (130 degrees) in terms of a.

The tan 130° is expressed as

Step-by-step explanation:

Since we have given that

As we know that

cos (π - θ ) = -cos θ

so, cos(180-50)=-cos 130° = -a

so, sin 130° would become

So, tan 130° is given by

Hence, the tan 130° is expressed as

c-4 is the final answer! : )

step-by-step explanation:

it's is b