N a math test the students are given a right triangle. One of the acute angles has a measure of . One student says that the measure of the other acute angle is . What is the measure of the other acute angle? What error might the student have made?

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

step-by-step explanation:

for volume, add base x height x width

answer: they are supplementary angles

step-by-step explanation: 161+19=180. supplementary angles equal 180 degrees