Question 11 is b. hope it helps question 12 is a. 13 is b. 14 is also b
Answer:
Step-by-step explanation:
Given
Two sides of triangle of sides 5 ft and 7 ft
and angle between them is increasing at a rate of 0.9 radians per second
let
is the angle between them thus
Area of triangle when two sides and angle between them is given


Differentiate w.r.t time

at 


Answer:
A
Step-by-step explanation:
Answer:
d
Step-by-step explanation:
i know it's rhe right answer
Answer:
Step-by-step explanation:
a₁₂ = a₁r¹²⁻¹ = -15×6¹¹