Maths / Introduction to Trigonometry / Trigonometric Identities

QUESTION
 

dpi{80} fn_phv sin: : 2A=2: : sin: : A  is the true when A =

OPTIONS
A. 

0^o

B. 

30^o

C. 

45^o

D. 

60^o

Right Option : A

EXPLANATION
Explain TypeExplanation Content
Text

given sin2A=2sinAwe know that sin2A=2sinAcosAso, 2sinAcosA=2sinAdivide with 2sinA on both sides ,we get cosA=1cosA=cos0A=0 

View Contents
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)
Self Learning
Testimonials
No Preview
PARENT FEEDBACK c/o Aman Kumar Shrivastava C/o ABHYAS Academy
 10th
Abhyas institute is one of the best coaching institute in the vicinity of Ambala Cantt area. The teachers of the institute are well experienced and very helpful in solving the problems of the students.The good thing of the institute is that it is providing extra classes for the students who are weak or the students who miss the regular classes.This is also major advantage of institute.My experience in respect of Abhyas is very good as my children are gaining good quality education
Back
Courses We Offer
(Concept based Learning and Testing for [6th - 10th], NTSE, Bank & Govt. Exams)