Which of the following is a sinusoid?

y=sinx
x^2+y^2=1
y=^3sqrtx
y=[x]

Option A that is y= sinx

Step-by-step explanation:

Sinusoid is a curve that has sine waves formation means it will contain sin in it.

Option A is correct that is y= sin x

Option B is incorrect because there will not form any curve that will have sin waves.

Option C is incorrect there is no sin function in it.

Option D is incorrect again because there is no sin function in it.

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°

21

step-by-step explanation: