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Slide 2

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The first thing to crack trig is to label the sides of a triangle. Right angled triangles
Simple. only for trig.
The longest side.
Remember from
Hyp Pythagoras
ote theorem.
nus
e
This is the
Opposite
easiest one,
it is opposite
from the Here is the
angle. angle.
Adjacent
So to label the other two sides it all depends on the angle displayed.
This just means next to
the angle.…read more

Slide 3

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m b
me
o re Make up a
t
asy silly rhyme,
r e e se. to remember
i os a hra
at ey p it
r
the is k
So th th
wi
Soh Cah Toa
Sine = opposite/hypotenuse
Cosine = adjacent/hypotenuse
Tan=opposite/adjacent
An example of a rhyme...
Some Old Hippy Caught Another Hippy Tripping On
Acid…read more

Slide 4

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With trig you can learn the angles of a triangle and the
sides of a triangle.
Finding out a certain angle in a triangle.
Finding out a certain side in a triangle.
Click on the topic that you can't do or just follow onto the next slide to find out
what is next to learn about trigonometry.…read more

Slide 5

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Angles... Sine 1. Label the sides of the
triangle.
2. Find out which
m
10c formula to use, using
Soh Cah Toa `Soh Cah Toa'
use 3. Fill in the formula
n
Opposite
p ote Sine of the 4. To work out the
Hy angle = 7/10 angle we need the
inverse because we
don't want to work
7cm out the sine we want
to work out the
Adjacent Angle = sin-1 (on the angle.
calculator) 7/10 5. Use your calculator
to work out the
=44.4 degrees. answer.
6. BOOM! Here is your
answer.
7. Put it to 3 significant
figures (suitable
degree of accuracy)…read more

Slide 6

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Cosine 1. Label the sides of the
triangle.
2. Find out which
7cm formula to use, using
Soh Cah Toa `Soh Cah Toa'
use 3. Fill in the formula
n
p ote Cosine of the 4. To work out the
Hy angle = 6/7 angle we need the
inverse because we
don't want to work
out the sine we want
to work out the
Adjacent 6cm Angle = cos-1 (on the angle.
calculator) 6/7 5. Use your calculator
to work out the
=31.0 degrees. answer.
6. BOOM! Here is your
answer.
7. Put it to 3 significant
figures (suitable
degree of accuracy)…read more

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