I'm thinking of an acute angle measured in degrees. The tangent of the angle is bigger than the cosine of the angle which in turn is bigger than the sine of the angle.
Without calculator guess what angle I might be thinking of.
With a calculator find a more precise answer to the question above.
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
Szilvia Varro-Gyapay, Montreal
Friday, September 4, 2020
"Thank you for the great question! I solved the question using partly algebra first:
Because x is an acute angle and sin x < cos x, 0
I took a look at the solution only after that. So maybe you could add the algebraic way as a second way to solve the question, too."
How did you use this resource? Can you suggest how teachers could present, adapt or develop it? Do you have any comments? It is always useful to receive feedback and helps make this free resource even more useful for Maths teachers anywhere in the world. Click here to enter your comments.
Your access to the majority of the Transum resources continues to be free but you can help support the continued growth of the website by doing your Amazon shopping using the links on this page. Below is an Amazon search box and some items I have chosen and recommend to get you started. As an Amazon Associate I earn a small amount from qualifying purchases which helps pay for the upkeep of this website.