The distance between the points (7,7) and (k,-5) is 13. Find k?
1). -2
2). 4
3). -4
4). 2
1. $\frac{ tan\theta}{1 - cot\theta}+\frac{ cot\theta}{1 - tan\theta}$ is equal to
2. If tan$\frac{A}{2}$ = x, then the value of x is
5. If cos -4π/3 = x, then the value of x is
7. If $Tan\theta $ = $\frac{4}{3}$, then what is the value of $Sin\theta $?
8. What is the simplified value of 1 + tanA tan(A/2)?
9. In a triangle ABC, if angle A = 72° , angle B = 48° and c = 9 cm then Ĉ is