Trigonometry
Welcome to class of
TRIGONOMETRY
1Tangent of an angle is defined as Tan = Opp side Adj
sideoppositeHypotoneousAdjacent side
8Some basic instruction which you have to follow so that you can
navigate this StAIR easily. These are some button you will be using
that will help you to move easily about this StAIR. Click on them
to find the result. This connects you to the first slide. Usually
to the next slides or depends on t situation. back to the previous
slide.In a right angled triangle Sine of an angle is defined as
ratio of opposite side by hypotenuse Sine = Opp side Hypo
oppositeHypotenuseAdjacent side
4Sine in term of length side remember it is ratio of opposite
side to Hypotoneous A
B CSin C = length AB length ACSin C = AB ACSin A = length BC
length AC
5Cosine of an angle in terms of sides Cos = Adj side Hypo
oppositeHypotoneousAdjacent side
6Cosine in terms of length of the side that is the ratio of
adjacent side to Hypotoneous A
B C Cos A = length AB length AC
Cos C = length BC length ACSin C = AB AC
7Tan of angle in term of length side A
B CTan C = length AB length BCSin C = AB AC
9What Sine of angle R ? P
Q RSin R = length length Sin C = AB AC
10Choose the right answer by clicking 1) PQ PR
QR PRSelectSelect
11Hey you got it right !!!!!!!!!!!!! So let me give another
question.
Choose the right answer for Tan R1) PQ QR
PR QR
ClickclickClick
Hey you understood lets try something more interesting
Relearn the same concept in new way ...........
17Choose the right answer by clicking 1) QR PR
PQ QRClickClick
20Well done ! Try something new....
Please observer this triangle and identify some patterns........
P BACQRxYZSin B = AC AB Sin R = PQ PRSin Y = XZ XY
22In a right angled triangle Sine of an angle is defined as
click the right answer 1) Sine = Opp side Hypotenuse
oppositeHypotenuseAdjacent side
2) Sine = Adjacent side Hypotenuse ClickClick23Hey you
understood it great!!! try out this question
Please observer this triangle and identify some patterns........
P BACQRxYZCos B = BC AB Cos P = PQ PRCos Y = YZ YX
25Cosine of an angle Choose by clicking the right option 1)Cos =
Opp Side Hypo 2) Cos= Adj Side Hypo Opposite HypotoneousAdjacent
side
ClickClick26Observe this triangle and identify some
patterns........ P BACQRxYZ Tan B = AC BC Tan R = PQ QRTan Y = XZ
YZ
27In a right angled triangle Tan of an angle is defined as click
at the right answer 1) Tan = Opp side Hypotenuse
oppositeHypotenuseAdjacent side
2) Tan = Adjacent side Opposite side ClickClick28Yes your
getting it. Lets try out some word problem in trigonometry....
32
33
ACEBD34Observe this pole in terms of right angled triangle and
trigonometry ratio A
ACEBDDDDCE B18 m
22 m7 m35Solution to the above problemIn right angled triangle
AEC
Sin ACE = AE AC
Sin ACE = 11 22
Sin ACE 1 2
So this way trigonometry can solve every day problems
Sin 30 = 1 2
There fore m ACE = 30
So final quiz Tan = opposite side Hypotoneous
Cos = Adjacent side Hypotoneous
Sin = Opposite Side Hypotoneous ClickClickClick
So now that you have learned everything basic about
trigonometry, why not actually explore more by visiting various web
site listed below
http://www.google.ae/search?hl=en&q=trigonometry+problems&meta=&aq=3&oq=trigonometry+
http://www.iki.rssi.ru/mirrors/stern/stargaze/Strig6.htm
http://www.math.com/homeworkhelp/Trigonometry.html
http://catcode.com/trig/index.html
