Answer:
x = 7.449
Step-by-step explanation:
CAH
cos 20 = 7 / x
x = 7 / cos 20
x = 7.449
This one is little complicated than the other one, first you have to find the missing angle. we do that by:
90 + 20 + x = 180
110 + x = 180
x = 70
now we use the sin formula:
sin 70 = 7 / x
x = 7 / sin 70
x = 7.449
