4 years ago

Explain how the math drawing can help you solve 8+ =14

Mathematics

1 answer:

butalik [34]4 years ago

4 0

Answer:

8+6=14

Step-by-step explanation:

that is my answer ig

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4. Given: a + m = n, n= 4a; Prove: m = 3a

IrinaVladis [17]

Answer:

Proof below

Step-by-step explanation:

Algebraic Manipulation

It refers to the process of modifying algebraic expressions, often into a simpler form or more easily handled and dealt with.

It also helps us to prove some identities.

We are given the relations:

a + m = n

n = 4a

Substituting the last equation in the first, we have:

a + m = 4a

Subtracting a on both sides of the equation:

m = 4a - a

Simplifying:

m = 3a

Hence proved

4 0

3 years ago

B) (1 - cos B)(1 + cos B) = 1/cosec^2(B)

faltersainse [42]

Answer:

Proved

Step-by-step explanation:

$(1-cosB)(1+cosB)=\frac{1}{cosec^2B} \\\\Use\\\\ (a+b)(a-b)=a^2-b^2 ,\\so,\\=(1)^2-(cosB)^2\\=1-cos^2B\\\\Now\ , we\ know\ \\sin^2B+cos^2B=1\\\\so,\\sin^2B=1-cos^2B\\so we just replace,\\\\=1-cos^2B=>sin^2B\\and\ since\ sinB=\frac{1}{cosecB} \\\\=sin^2B=>\frac{1}{cosec^2B}\\$