If cos(theta) = 4/5, find the value of (1 – tan(theta)) / (1 + tan(theta)).

Topic: Trigonometry
Subtopic: Trigonometric Expressions

A1/7

B2/7

C3/7

D4/7

Explanation

cos(theta) = 4/5 => sin(theta) = 3/5 => tan(theta) = 3/4. Expression = (1 – 3/4) / (1 + 3/4) = (1/4) / (7/4) = 1/7.

Exam Relevance

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