Read the proof What is the missing step and reason?
Step
tan(x) +tan(x)
: tangent double angle identity
1-tan(x) tan(x)
Reason
tan(x) + tan(x)
1-tan(x) tan(x)
tangent sum identity
tan(2x) = tan(x+x)
Addition
tan(x) + tan(x)
: tangent double angle identity
1+tan(x) tan(x)
?
?
=
tan(x) +tan(x)
1+tan(x) tan(x) : tangent sum identity
2(x)
1 -tan-(x)
Simplify

An airplane consumes fuel at a constant rate while flying through clear skies, and it consumes fuel at a rate of 64 gallons per minute while flying through rain clouds. let c represent the number of minutes the plane can fly through clear skies and r represent the number of minutes the plane can fly through rain clouds without consuming all of its fuel. 56c+64r < 900056c+64r< 9000 according to the inequality, at what rate does the airplane consume fuel while flying through clear skies, and how much fuel does it have before takeoff? the airplane consumes fuel at a rate of gallons per minute while flying through clear skies, and it has gallons of fuel before takeoff. does the airplane have enough fuel to fly for 60 minutes through clear skies and 90 minutes through rain clouds?

Molly shared a spool of ribbon with 12 people. each person received 3 feet of ribbon. which equation can she use to find r, the number of feet of ribbon that her spool originally had?

Someone which statements are true? check all that apply.