From trignometry of maths we can use the basic formula required for it.

Question

Arun · Answer

Dear student As tan60 = √3 Niw main thing we have ti find out is tan 6 tan 42 tan 78 (tan18)/ tan18 = tan 6 tan (90 -18) tan (60+18) tan 18 /tan18 Use formula tan A tan (60-A) tan(60+A) = tan3A = tan 6 tan54 /tan18 = tan 6 tan (60-6) tan(60+6) /tan 18 tan 66 = Tan 18/tan 18 tan 66 = 1/tan 66 Hence answer will be √3 /tan66 Means I think you have typed wring as it should be tan66 instead of tan60

Thank you for registering.

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

Enter Your Details

Registration done!

From trignometry of maths we can use the basic formula required for it.

From trignometry of maths we can use the basic formula required for it.

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 10 grade maths

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