Texas Instruments MathPrint TI-30X Pro Manual Book page 29

cos -
5
<
- r
³ Problem
Find angle A of the right triangle below. Then calculate angle B and the length of the
hypotenuse c . Lengths are in metres. Round results to one decimal place.
Reminder:
7
tan A = therefore m ±A = tan
3
m ±A + m ±B + 90¡ = 180¡
therefore m ±B = 90¡ - m ±A
2 2
3 + 7
c =
Set mode to DEGREE and fix 1 decimal place for the calculations.
Note:
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U % i <
90
% b 3 F T 7 F <
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7
-1
3
Math Functions 25