# comprehension check for derivatives of trigonometric functions: a) true or false: if fprime(theta) = -sin(theta), then f(theta) = cos(theta). b) true

comprehension check for derivatives of trigonometric functions:
a) true or false: if
b) true or false: is one of the non right angles in a right triangle and $\mathrm{sin}\left(\theta \right)=2/3$, then the hypotenuse of the triangle must have length 3.

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