Posted by joan on Monday, March 25, 2013 at 8:40pm.
find tan 30 degrees and tan 45 degrees using the 454590 triangle therom and
306090 triangle theorm

math  Reiny, Monday, March 25, 2013 at 9:14pm
In an easily accessible part of your notebook
make a sketch of a 306090 triangle, and put in the values
1 opposite the 30°
√3 opposite the 60°
2 opposite the hypotenuse
MEMORIZE THESE VALUES
(the smallest is opposite the smallest angle, etc..)
Do the same for the 454590 using sides
1  1  √2
now tanØ = opposite/adjacent or y/x
tan 30 = 1/√3 , look at your triangle
tan 45 = 1/1 = 1
check with your calculator
Answer This Question
Related Questions
 Math  Determine each tangent ratio to four decimal places using a calculator. A...
 Math(Please help)  1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 ...
 Math(Please help)  1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 ...
 Precalculus  The directions are write the expression as the sine, coine, or ...
 Geometry/Trig.  For acute angle Aof a right triangle, find tan A by using the ...
 PreCal  1)tan 5 degrees + tan 25 degrees / 1 tan 5 degrees tan 25 degrees = ...
 Trigonometry  Please review and tell me if i did something wrong. Find the ...
 MathTrigonometry  Show that if A, B, and C are the angles of an acute triangle...
 Physics  I calculated tan and sin (theta) for a physics lab experiment  two...
 trig  h t t p : / / i m g 4 0 . i m a g e s h a c k . u s / c o n t e n t . p h...
More Related Questions