Other tags that relate to Trig Reps
Trigonometric functions and graphs. Trigonometric identities. Generalising. Complex numbers. Investigations. Maclaurin series. Maths Supporting SET. Sine, cosine, tangent. Regular polygons and circles. Pythagoras' theorem.There are 14 results
Broad Topics > Coordinates, Functions and Graphs > Trigonometric functions and graphs
Degree Ceremony
Age 16 to 18
Challenge Level
What does Pythagoras' Theorem tell you about these angles: 90°, (45+x)° and (45-x)° in a triangle?
Small Steps
Age 16 to 18
Challenge Level
Two problems about infinite processes where smaller and smaller steps are taken and you have to discover what happens in the limit.
Loch Ness
Age 16 to 18
Challenge Level
Draw graphs of the sine and modulus functions and explain the humps.
After Thought
Age 16 to 18
Challenge Level
Which is larger cos(sin x) or sin(cos x) ? Does this depend on x ?
Spherical Triangles on Very Big Spheres
Age 16 to 18
Challenge Level
Shows that Pythagoras for Spherical Triangles reduces to Pythagoras's Theorem in the plane when the triangles are small relative to the radius of the sphere.
What Do Functions Do for Tiny X?
Age 16 to 18
Challenge Level
Looking at small values of functions. Motivating the existence of the Taylor expansion.
Building Approximations for Sin(x)
Age 16 to 18
Challenge Level
Build up the concept of the Taylor series
Taking Trigonometry Series-ly
Age 16 to 18
Challenge Level
Look at the advanced way of viewing sin and cos through their power series.
Trig-trig
Age 16 to 18
Challenge Level
Explore the properties of combinations of trig functions in this open investigation.
Sine and Cosine
Age 14 to 16
Challenge Level
The sine of an angle is equal to the cosine of its complement. Can you explain why and does this rule extend beyond angles of 90 degrees?
Climbing
Age 16 to 18
Challenge Level
Sketch the graphs of y = sin x and y = tan x and some straight lines. Prove some inequalities.
Squareness
Age 16 to 18
Challenge Level
The family of graphs of x^n + y^n =1 (for even n) includes the circle. Why do the graphs look more and more square as n increases?
Tangled Trig Graphs
Age 16 to 18
Challenge Level
Can you work out the equations of the trig graphs I used to make my pattern?
NRICH is part of the family of activities in the Millennium Mathematics Project.