Trigonometric tutorial simplify a trig expression

The video tutorial explores two methods for transforming trigonometric expressions: using secant squared and the Pythagorean identity, or transforming 1 minus sine squared. The instructor chooses the latter for simplicity, demonstrating how to use trigonometric identities to simplify expressions. By rewriting expressions, the tutorial shows how to achieve a simplified result where terms cancel out, ultimately equating to 1. The video emphasizes understanding and applying trigonometric identities for effective simplification.

Which method did the teacher choose to simplify the expression?

• Transforming 1 minus sine squared

• Transforming secant squared

• Applying the double angle formula

• Using the tangent identity

What identity is used to transform 1 minus sine squared?

• Cosine squared equals 1 minus sine squared

• Secant squared equals 1 plus tangent squared

• Sine squared equals 1 minus cosine squared

• Tangent squared equals secant squared minus 1

What is the result of substituting cosine squared for 1 minus sine squared?

• The expression becomes more complex

• The expression remains unchanged

• The expression becomes undefined

• The expression simplifies

How can secant squared be rewritten to simplify the expression?

• As sine squared

• As cotangent squared

• As cosine squared

• As tangent squared

What is the final result after simplifying the expression using trigonometric identities?

• 0

• 1

• 2

• Undefined