Question

For an acute angle O, the equation sin(®)=cos(12°) is true. What is the value of f ?

Answer 1

Given

`\sin \theta=\cos \text{ 12}`

Recall

They are complimentary

Now

`\begin{gathered} USING \\ \sin \theta=\cos \text{ (90-}\theta) \\ \theta=78 \\ \end{gathered}`

The final answer

`\theta=78^0`