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

Question

Arun Kumar · Answer

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

Thank you for registering.

Register Now and Win Upto 25% Scholorship for a Full Academic Year !

Enter Your Details

Registration done!

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

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

1 Answers

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

Other Related Questions on Discuss with Askiitians Tutors

ASK QUESTION

Answer and earn gift vouchers

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Complete Self Study Package designed by Industry Leading Experts

Live 1-1 coding classes to unleash the Creator in your Child

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Register Now & Win Upto 25% Scholorship