Math Problem Statement

Is equal to

Solution

Thank you for the clarification! The problem now reads:

If (tanA+cotA)2=?\text{If } (\tan A + \cot A)^2 = \text{?}

Let's solve it.

Step 1: Expand the square

(tanA+cotA)2=tan2A+2tanAcotA+cot2A(\tan A + \cot A)^2 = \tan^2 A + 2 \tan A \cdot \cot A + \cot^2 A

Step 2: Simplify the expression

Recall that cotA=1tanA\cot A = \frac{1}{\tan A}, so we have: (tanA+cotA)2=tan2A+2tanA1tanA+1tan2A(\tan A + \cot A)^2 = \tan^2 A + 2 \cdot \tan A \cdot \frac{1}{\tan A} + \frac{1}{\tan^2 A}

Simplify further: =tan2A+2+1tan2A= \tan^2 A + 2 + \frac{1}{\tan^2 A}

Step 3: Use the identity for tan2A\tan^2 A

Let x=tan2Ax = \tan^2 A. Then the expression becomes: x+2+1xx + 2 + \frac{1}{x}

Step 4: Common denominator (if needed)

If you need a single expression, you can write this as: x2+2x+1x=(x+1)2x\frac{x^2 + 2x + 1}{x} = \frac{(x + 1)^2}{x}

But most likely, the answer to the original problem is: (tanA+cotA)2=tan2A+2+cot2A(\tan A + \cot A)^2 = \tan^2 A + 2 + \cot^2 A

If the question asks for a particular value of AA, then we would need to substitute that value in.

Would you like more details or have any questions?

Relative Questions:

  1. What is the value of tanA\tan A when A=45A = 45^\circ?
  2. How does the identity tan2A+1=sec2A\tan^2 A + 1 = \sec^2 A relate to this problem?
  3. What happens if tanA=1\tan A = 1 in the original expression?
  4. How can this problem be solved using trigonometric identities?
  5. What is the geometric interpretation of tanA\tan A and cotA\cot A?

Tip:

Understanding the relationship between tan\tan and cot\cot functions can greatly simplify trigonometric identities and expressions!