What is the missing step and reason? tan(x) + tan(x)
1-tan(x) tan(x)'
tangent double angle identity
tan(x) + tan(x)
1-tan(x) tan(x)
r; tangent sum identity
tan(x) + tan(x)
1+tan(x) tan(x): tangent double angle identity
tan(x) +tan(x)
1+tan(x) tan(x)
tangent sum identity

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step-by-step explanation:

a.

step-by-step explanation:

step 1 distribute 2 to every term in the parentheses

step 2 add 10 on both sides of the equal sign

hi im bob : l

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh