What are the terms of each expression 3a-19
2 answers:
Answer:
The given expression has two terms "3a" and "19".
Step-by-step explanation:
The given expression is
A term is either a single number or variable, or product of numbers and variables. The signs "+", "− " and "/" are used to separate the variables.
In the given expression the terms are separated through negative sign.
The above expression is the difference of two expression "3a" and "19".
Therefore the given expression has two terms "3a" and "19".
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Answer: We can arrange the steps with help of below explanation.
Step-by-step explanation:
Here ABC is a triangle,
Draw a perpendicular from BD to side AC ( construction)
where
In the right triangle BCD, from the definition of cosine:
cos C =CD/ BC
CD= a cos C
Subtracting this from the side b, we see that
DA= b-acos C
In the triangle BCD, from the definition of sine:
sin C =BD / a
BD = a sin C
In the triangle ADB, applying the Pythagorean Theorem
Substituting for BD and DA from (2) and (3)
⇒ ( On simplification)
⇒
⇒
⇒ (because,
)
