Flag Discuss with Askiitians Tutors> could you give some points about trig. I ...
question mark

could you give some points about trig. I am always confused with trig about how to calculate cos46, tan32, sin54 withot a calculator..... could you pls clear this doubt

ashutosh anand , 10 Years ago
Grade 8
anser 1 Answers
Arun Kumar

Last Activity: 10 Years ago

Hello Student,
Try relating them with common values
sin0,30,45,60,90
for eg for sin15 use sin30 value
for sin54 we do like this
90-2*18=3*18
so
sin2*18=sin3*18
using sin2A and sin3A we can find sin18
then again we get sin3*18 by sin3A
similary cos36=sin54
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty

Provide a better Answer & Earn Cool Goodies

Enter text here...
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Ask a Doubt

Get your questions answered by the expert for free

Enter text here...