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3 years ago

Can you guys please help me my math teacher wants us to get this right and I don’t get it please help me on all of it

Mathematics

1 answer:

Ostrovityanka [42]3 years ago

7 0

#5 is

Let's solve your equation step-by-step.

x−1=9

Step 1: Add 1 to both sides.

x−1+1=9+1

x=10

Step 2: Multiply both sides by 5/2.

(

)*(

x)=(

)*(10)

x=25

Answer:

x=25

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Answer:

28.07° ; 70.53° ; 53.13° ; 36.87°

Step-by-step explanation:

Using PYTHAGORAS RULE :

IMAGE 1:

value of cos α equals :

cos α = Adjacent / Hypotenus

cos α = 15 / 17

cos α = 0.88235

α = cos^-1 (0.88235)

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IMAGE 2:

sin β = Opposite / Hypotenus

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β = sin^-1(0.9428)

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IMAGE 3:

From trigonometry :

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Tan = Opposite / Adjacent

Therefore, Cot = Adjacent / Opposite

cot γ = 3/4

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γ = 53.13°

IMAGE 4:

tan α = Opposite / Adjacent

tan α = 15 / 20

tan α = 0.75

α = tan^-1 (0.75)

α = 36.87°

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