ive been working on my sat's and i cant seem to figure out how to answer the following question.

a right angle is given. the length of ba is 20. what is the approx length of bc?
sin= .643
cos= .766
tan= .839

the answer is 12.9 but i don't know how that is.

I assume bc is the other leg, and ba is one leg.

Isnt Sin of the base angle= bc/ba?

then bc= .643*ba

Ask a New Question or answer this question.

Similar Questions

Use the image to answer the question.An illustration shows four trapezoids labeled Figure 1, Figure 2, Figure 3 and Figure 4
1. 1 answer
Figure 1: chairFigure 2: tree Figure 3: nut Figure 4: House which scale drawing is a dilation that increases the size of the
1. 1 answer
Use the image to answer the question. Select the correct decomposition of triangle ABC into triangles. Choose 1 for Figure A , 2
1. 11 answers
Which figure can you describe as similar to Figure A?(1 point) Responses Figure E Figure E Figure B Figure B Figure D Figure D
1. 1 answer