Trigonometry - Sin, Cos, Tan Notes

Trigonometry-Sin ,
Cos , Tan




#
E

Potenuse
the opposite
side always
is




·
opposite the and

sinc =
opp cos =
adj tanx = opp
hyp hyp adj
x
C
adjacent S in Cos Tan
nex+
to
g A g
H H A



Example Questions b O

2
adjacent (37)
sin(58) it
+an =


~ P =


↓ 430 p =2
6cm
(58)
Gam b = 11
tan (37) 1kcm X Sin
a O
7 96cm gga
p = .



I b = 9 33em
.


↑




37
cos(43) 5 =



a= 6 xcos(43)
a = 4 40 .




&




Finding the angle Find
the
angle
T sin(b) =
to
find the angle we use the inverse 14 cm
sin-
I
sin inverse
U
b=
sint()
b = 45 6
-




COS Cos inverse .




tant tan inverse
10cm O




Example Questions
(300
10 cm

Im
04
5 8 u
Em
a
.




a acm -
O 7 x(


sin()=
↳

(30) =
T
as sin

cos(b) =
2 sin(a) Som
2
= 0= 9xsin(30) c=
sint()
b= cost (i) a sint()
= 0 = 4 5 cm. x= 26 .
78
%


b = 45 a =
600