Transcript Grade C - Growth Mindset Maths

LO To assess your understanding of
Trigonometry
RAG
Key Words: Sine, Tangent, Cosine, Inverse
4-Apr-16
Grade D
For each of the triangles below label the sides adjacent, opposite and
hypotenuse.
Grade C
For each of the triangles above decide which of the Trigonometrical Ratios you
would use to find the missing side or angle.
Grade C
Describe the difference between a problem that can be solved using
trigonometry and a problem that can be solved using Pythagoras’ Theorem.
Grade B
Grade A /A*
The depth, D metres, of the water at the end of
a jetty in the afternoon can be modelled by this
formula
D = 5.5 + A sin 30(t – k)°
where
t hours is the number of hours after midday,
A and k are constants.
Yesterday the low tide was at 3 p.m.
The depth of water at low tide was 3.5 m.
Find the value of A and k.
Grade
Trigonometry
A / A* I can use trigonometrical relationships in
right-angled triangles to solve 3-D problems
including finding the angles between a line
and a plane.
I can calculate the area of a triangle using ½
ab sin C.
I can draw, sketch and describe the graphs of
trigonometric functions for angles of any
size, including transformations involving
scalings in either or both of the x and y
directions.
I can use the sine and cosine rules to solve
2-D and 3-D problems.
B
I can use trigonometry (Sin, Cos, Tan) to
•find a missing angle
•find one of the shorter sides
•find the hypotenuse.
C
I can choose which trig ratio to apply to a
given problem (Sin, Cos, Tan)
I can recognise the difference between
problems involving right-angled triangles
that require (i) Pythagoras’ theorem, or (ii)
trigonometry, to be applied.
D
I can recognise a right-angled triangle and
identify the hypotenuse.
I can label the Opposite and Adjacent sides
to any given angle.
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