Question

Find the measure of x.​

Answer 1

Explanation:

90 + 55 + a = 180

145 + a = 180

a = 180 -145

a = 35

secQ = B/H

1.3 = 80 / x

x = 80/1.3

x = 61.6

Answer 2

139.5

Explanation:

cos(angle) = adjacent/hypotenuse

cos(55) = 80/x

x*cos(55) = 80

x = 80/cos(55)

x = 139.4757

x = 139.5 (rounded)