alleryThe identity $1 + \tan^2\theta$ equals:
A$\cot^2\theta$
B$\csc^2\theta$
C$\sec^2\theta$
D$\cos^2\theta$
Answer & Solution
Correct answer: C. $\sec^2\theta$
Dividing sin²+cos²=1 by cos²θ gives 1 + tan²θ = sec²θ.
Keep practising Unit 1A3: Function Composition and Inverses
Browse all Unit 1A3: Function Composition and Inverses questions for AP Calculus AB, or explore more Mathematics topics.
Related questions
How many PERFECT SQUARES lie strictly between 100 and 200?Using prime factorisation, √324 equals:The sum 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 equals:Which of the following is a perfect square?Which of the following is NOT a perfect square?Three rational numbers a, b, c are given. Which of the following is ALWAYS true?For which rational number a is the statement 'a is its own additive inverse' TRUE?Using distributivity, the value of (7/5) × (−3/12) + (7/5) × (5/12) is: