Derivatives of Circular Functions (VCE SSCE Mathematical Methods): Quizzes

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Derivatives of Circular Functions
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What is the derivative of sin(kθ)\sin(k\theta) with respect to θ\theta?

kcos(kθ)k\cos(k\theta)

What is the derivative of cos(kθ)\cos(k\theta) with respect to θ\theta?

ksin(kθ)-k\sin(k\theta)

What is the derivative of tan(kθ)\tan(k\theta) with respect to θ\theta?

ksec2(kθ)k\sec^2(k\theta)

What is the value of limθ0sinθθ\lim_{\theta \to 0} \frac{\sin \theta}{\theta}?

11

How is the secant function secθ\sec \theta defined?

1cosθ\frac{1}{\cos \theta}

What is ddθ[sin2(2θ)]\frac{d}{d\theta}[\sin^2(2\theta)]?

4sin(2θ)cos(2θ)4\sin(2\theta)\cos(2\theta)

What is ddθ[cos3(4θ+1)]\frac{d}{d\theta}[\cos^3(4\theta+1)]?

12cos2(4θ+1)sin(4θ+1)-12\cos^2(4\theta+1)\sin(4\theta+1)

What is ddθ[tan(3θ2+1)]\frac{d}{d\theta}[\tan(3\theta^2+1)]?

6θsec2(3θ2+1)6\theta \sec^2(3\theta^2+1)

Which complementary angle identity is correct?

cosθ=sin(π2θ)\cos \theta = \sin(\frac{\pi}{2}-\theta)

For y=tanθy = \tan \theta, what is the gradient at θ=π4\theta = \frac{\pi}{4}?

22

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