2[6+4{m-6(7-n-p)+q}]​

Step-by-step explanation:

2[6 + 4{m – 6(7 – (n + p bar)) + q}]

= 2[6 + 4{m – 6 (7 – n – p) + q}]

= 2[6 + 4 {m – 42 + 6n + 6p + q}]

= 2[6 + 4m – 168 + 24n + 24p + 4q]

= 2[4m + 24n + 24p + 4q – 162]

= 8m + 48n + 48p + 8q – 32

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