b=7,c=10, COS A = 40°, a=

Step-by-step explanation:

According to the cosine rule :

a = b² + c² - 2bc × cosA

a = 7² + 10² - 2 × 7 × 10 × cos40⁰

a = 49 + 100 - 106.4

a = 149 - 106.4

a = 43.4

not solvable

step-by-step explanation:

we need more information, or at least an

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (: