MAP4C UNIT 1 – TRIGONOMETRY
Vocabulary: Proportion, crossmultiply, trigonometry, trig
ratio, rightangled triangle, adjacent, opposite, hypotenuse, sine, cosine,
tangent, SOHCAHTOA, trig function, inverse trig function, degree mode, line
of sight, angle of elevation/inclination, angle of depression, the horizontal, obtuse
triangle.
Tentative Date 
Learning Goals 
Class work/ Homework 
I know I am successful when I can... 
Wed Sept 5 
.introducing the course .reviewing how to solve a proportion .reviewing the Pythagorean Theorem 
Worksheets 
.solve a proportion by crossmultiplying .identify the hypotenuse of a
rightangled triangle .find a missing side of a rightangled
triangle, if you have the other two sides 
Thu Sept 6 
.using trigonometry to find unknown sides
and angles in a rightangled triangle .using “SOH CAH TOA” to remember the trig
ratios 
Worksheets 
.draw a diagram and of a right triangle,
and label the sides as “adjacent”, “opposite” and “hypotenuse” with respect
to a particular angle .state the three primary trigonometric
ratios (sin, cos, tan) for a particular angle .use SOH CAH TOA to set up a proportion
involving the trig ratio and missing value .solve the proportion for the missing
side .solve the proportion and use the inverse
trig function (sin 1, cos1, tan1) to find the missing angle .decide whether an angle is acute/obtuse .find the three trig ratios of obtuse
angles 
Friday Sept 7 
.practicing using trigonometry to find
unknown sides and angles in rightangled and obtuse triangles 
Worksheets 1.1 p.23 #2,3,4,7,11,12 

Mon Sept 10 
.reviewing: find unknown sides and angles
in rightangled or obtuse triangles 
1.1, 1.3 p.8 #16 p.9 #811,13,15 
.as above .do the review problems .review my notes for the quiz 
Tue Sept 11 
QUIZ – SOH CAH TOA .using the sine law 
1.4 p.31 #2,3,5,6,8,16 
.set up and solve the Sine Law proportion
statement correctly, using the correct sides and angles .look for a matching pair of angle and
opposite side I need this in order
to use the Sine Law 
Wed Sept 12 
.using the cosine law 
1.5 p.38 #2,3,4,6,9,11 
.set up and solve the Cosine Law
statement correctly, using any letters .rearrange the equation correctly in
order to solve for an unknown angle 
Thu Sept 13 
.solving trigonometry problems from
careers 
Worksheets (hand in full solutions on Friday) 1.6 p.48 #7, 10,12,16 
.draw a correct, labeled diagram from a
word problem .DECIDE whether it is most efficient to
use SOHCAHTOA, Sine Law or Cosine Law, depending on the information given: 
if
90^{o}: use SOHCAHTOA 
if
matching pair of angle and opposite side given: Sine Law 
if
none of the above: Cosine Law 
Fri Sept 14 

Mon Sept 17 
Careers solutions due Unit 1 Review 
p.54 #14,67, 9,13,14,18a,20 Worksheets 
.do the review problems .ask for help if I don’t understand
something 
Tue
Sept 18 
Unit 1 Review 


Wedn Sept 19 
UNIT 1 TEST 

.do my best on the test 