Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
If tan 2A = cot (A – 18°), where 2A is an acute angle, find the value of A
Advertisement Remove all ads
Solution
tan 2A = cot (A – 18°)
cot (90° – 2A) = cot (A – 18°)
(∵ cot (90° – θ) = tan θ)
90° – 2A = A – 18°
3A = 108°
A = 36°
Concept: Trigonometric Ratios of Complementary Angles
Is there an error in this question or solution?
