MAT & Trig
2.4 Solving Right Triangles Notes – Day 1
Mathematician:
Just a quick reminder of the calculator skills we discussed in section 2.3…………..
Ex 1:
sin 40o 
sin_____o  0.9659258263
cot26o 
cot______o  0.8390996312
Solve the right triangle below for the length of side a.
a
22.5 feet
500
Ex 2: Solve the right triangle below for the length of side c.
c
42o
12.5 inches
Ex 3: Solve the right triangle below for the measure of angle B.
18 feet
Bo
7.4 feet
Ex 4: Use the picture below to identify the value of each of the following sides and angles.
C
8.6 meters
57o
A
10.2 meters
Helpful Hints:
B
The Sum of All Angles in a triangle is
If you have two sides of a right triangle, use
Ex 5: Solve the right triangle ABC, if
Sides
Angles
a=
A=
b=
B=
c=
C=
.
to find the third side.
A  34 and c = 12.7 in. [Always Assume Angle C = ______o ]
Sides
Angles
a=
A=
b=
B=
c=
C=
C
Ex 6: Solve the right triangle ABC, if a  29.43 cm and c = 53.58cm.
Sides
Angles
a=
A=
b=
B=
c=
C=