Answer:
25) 3 = 5 + secΘ where we have 2 possible values of Θ (2π/3 or 4π/3)
3 = 5 + sec (2π/3)
3 = 5 + sec (120 degrees)
3 = 5 + (-2)
3 = 3
theta = 4π/3
3 = 5 + sec (240 degrees)
3 = 5 + (-2)
3 = 3
Therefore, the equation is true for both 2π/3 and 4π/3
27) -2 SinΘ = -1 {π/6 , 5π/6}
-2 * sin(π/6) = -1
sin(π/6) = 1/2
1/2 = 1/2
LHS = RHS
theta = 5π/6
-2 sin(5π/6) = -1
sin(5π/6) = 1/2
1/2 = 1/2
LHS = RHS
Kindly Mark Brainly
