Question

If one root of the equation (x+4)(x+3)=0 is -4 , then Find the another root of the equation.
If Sin20 = Cos(0-30º), then Find the value of 'o'
Find the co-ordinates of the mid point of the line segment Joining the points A(2,3) and B(4,​

Answer 1

Step-by-step explanation:

Solutions:-

1)

Given that :

One root of the equation (x+4)(x+3)=0 is -4

Given equation is (x+4)(x+3)=0

=> (x+4)= 0 or (x+3) = 0

=> x = -4 or x = -3

The another root = -3

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2)

Given that

Sin 2θ = Cos ( θ-30°)

We know that Sin θ = Cos (90°-θ)

=> Cos (90°-2θ) = Cos ( θ-30°)

=> 90°-2θ = θ-30°

=> 90° +30° = θ + 2θ

=> 120° = 3θ

=> θ = 120°/3

=>θ = 40°

The value of θ = 40°

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Answer 2

the value of (o)is 40º i think so