Answer :
tan 2A = cot (A - 24⁰)
We know that tan θ = cot (90⁰ - θ)
cot (90⁰ - 2A) = cot (A - 24⁰)⇒ 90⁰ - 2A = A - 24⁰
⇒ 90⁰ + 24⁰ = A + 2A
⇒ 90⁰ + 24⁰ = 3A
⇒ 114⁰ = 3A
⇒ A = 38⁰
Or
Consider (sin233⁰ + sin257⁰),We know that sin θ = cos (90⁰ - θ)
sin233⁰ + sin257⁰ = sin233⁰ + cos2(90⁰ - 57⁰)
= sin233⁰ + cos233⁰
= 1
Rate this question :
How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Glimpses of India39 mins
Glimpses of India39 minsTry our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
view all courses
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
RELATED QUESTIONS :
Choose the correc
RS Aggarwal - MathematicsIf A, B and C are
RS Aggarwal - Mathematics