Texas Instruments TI-36X manual 1 ,-23/.2, 1 ,-/0.4, 1 ,-/7.6, 1 ,-66/.8, Problem

³ Problem

Find angle a in the right triangle below. Then find the length of the hypotenuse h and angle b. Measurements of length and height are in meters. Round off results to one decimal place.

b h

3

a

7

Remember 3/7=tan a, so a=tanL1(3/7). Then 3/h=sin a, so h=3/sin a. Then 7/h=sin b, so b=sinL1(7/h).

%t1 e!3 =7 O V

e%uOV

3=%uV

e"7 =%uOV

tan- (3ñ7) ß

.1: ,-23/.2

sin(Ans) ß

.1: ,-/0.4

3ñAns ß

.1: ,-/7.6

sin- (7ñAns) ß

.1: ,-66/.8

Angle a is about 23.2 degrees. The hypotenuse h is about 7.6 meters. Angle b is about 66.8 degrees.

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Ti36eng1.doc TI-36X II Manual Linda Bower Revised: 01/10/03 10:47 AM Printed: 01/10/03 10:47 AM Page 21 of 48