Sign up to access problem solutions.

Already have an account? Log in here.

Equations with trigonometry in them can look scary, but that's nothing that a quick little substitution can't fix.

Find all values of \( \theta \) such that

\[ \cos^2 \theta = 1. \]

In the options, \(n\) is an integer.

Sign up to access problem solutions.

Already have an account? Log in here.

Given that

\[ \cos(A)-4\sin(A)=1,\]

what are the possible values of

\[ \sin(A) + 4\cos(A)? \]

Sign up to access problem solutions.

Already have an account? Log in here.

\[\large\sin\theta+\cos\theta=\sqrt{2}\sin(90^{\circ}-\theta), \ \ \ \ \ \cot\theta = \ ? \]

**Give your answer to 3 decimal places.**

Sign up to access problem solutions.

Already have an account? Log in here.

Find the value of \(x\) between 0 and 180 such that

\[\tan({ 120 }^{ \circ }-x^{ \circ })=\frac { \sin{ 120 }^{ \circ }-\sin x^{ \circ } }{ \cos{ 120 }^{ \circ }-\cos x^{ \circ }}.\]

Sign up to access problem solutions.

Already have an account? Log in here.

Sign up to access problem solutions.

Already have an account? Log in here.

×

Problem Loading...

Note Loading...

Set Loading...