1+(sinA/tanB)^2/1+(sinA/tanC)^2

1 + (sinA / tanB)^2 / 1 + (sinA / tanC)^2 = (tanB^2 + sinA^2) / (tanC^2 + sinA^2)

To simplify the given expression: 1 + (sinA/tanB)^2 / 1 + (sinA/tanC)^2

First, let's simplify (sinA/tanB)^2 and (sinA/tanC)^2 separately by using trigonometric identities.

Using the identity: tan(X) = sin(X) / cos(X)

Rewriting the given expression:
1 + (sinA/(sinB/cosB))^2 / 1 + (sinA/(sinC/cosC))^2

Next, we simplify the denominators:
sinB/cosB = tanB
sinC/cosC = tanC

Substituting these back into the expression:
1 + (sinA/tanB)^2 / 1 + (sinA/tanC)^2

Now, we have:
1 + (sinA/tanB)^2 / 1 + (sinA/tanC)^2

We can further simplify by finding a common denominator for the fractions in the numerator:
1 + ((sinA)^2 / (tanB)^2) / 1 + ((sinA)^2 / (tanC)^2)

Next, we can combine the fractions in the numerator:
1 + (sinA)^2(tanC)^2 / (tanB)^2(tanC)^2 / 1 + (sinA)^2(tanB)^2 / (tanC)^2(tanB)^2

Since we have a common denominator, we can combine the fractions by adding the numerators together:
1 + (sinA)^2(tanC)^2 + (sinA)^2(tanB)^2 / (tanB)^2(tanC)^2 / 1 + (sinA)^2(tanB)^2 + (sinA)^2(tanC)^2 / (tanC)^2(tanB)^2

Finally, we can simplify further by combining like terms and adding the fractions in the numerator:
1 + (sinA)^2[(tanC)^2 + (tanB)^2] / (tanB)^2(tanC)^2 / 1 + (sinA)^2[(tanB)^2 + (tanC)^2] / (tanC)^2(tanB)^2

This is the simplified form of the given expression.

To simplify the expression 1 + (sinA/tanB)^2 / 1 + (sinA/tanC)^2, we need to apply the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, and Addition and Subtraction from left to right).

1 + (sinA/tanB)^2 / 1 + (sinA/tanC)^2

First, let's simplify the numerator and denominator separately:

Numerator:
(sinA/tanB)^2

Since (sinA/tanB)^2 is raised to the power of 2, we can write it as:

(sinA)^2 / (tanB)^2

Since (sinA)^2 and (tanB)^2 are both squared, we can write them as:

sin^2(A) / tan^2(B)

Denominator:
1 + (sinA/tanC)^2

Now, let's simplify the denominator:

(sinA/tanC)^2

Similar to the numerator, we can write it as:

(sinA)^2 / (tanC)^2

So, the expression becomes:

1 + (sin^2(A) / tan^2(B)) / 1 + (sin^2(A) / tan^2(C))

Next, let's simplify the expression further by combining the fractions:

1 + (sin^2(A) * tan^2(C)) / (tan^2(B) * (1 + sin^2(A)))

Since (1 + sin^2(A)) appears in both the numerator and denominator, we can cancel them out:

1 + (tan^2(C) / tan^2(B))

Finally, the simplified expression is:

1 + tan^2(C)/tan^2(B)