##### Get a free home demo of LearnNext

Available for CBSE, ICSE and State Board syllabus.
Call our LearnNext Expert on 1800 419 1234 (tollfree)
OR submit details below for a call back

clear

Asked by Chundi Sasidhar kumar reddy

Apr 20, 2015

# Find the value of tan 15 degrees

Find the value  of  tan 15 degrees

#### question_answer Answers(3)

Answer

Syeda

Member since Jan 25, 2017

Answer. Let  tan(15Â°) = tan(45Â°-30Â°) We know that tan(A - B) = (tanA - tanB) /(1 + tan A tan B) â‡’tan(45Â°-30Â°) = (tan45Â°- tan30Â°)/(1+tan45Â°tan30Â°) = {1- (1/âˆš3)} / {1+(1/âˆš3)} âˆ´ tan15Â° = (âˆš3 - 1) / (âˆš3 + 1) SME Approved

Raghunath Reddy

Member since Apr 11, 2014

Let  tan(15Â°) = tan(45Â°-30Â°) We know that tan(A - B) = (tanA - tanB) /(1 + tan A tan B) â‡’tan(45Â°-30Â°) = (tan45Â°- tan30Â°)/(1+tan45Â°tan30Â°) = {1- (1/âˆš3)} / {1+(1/âˆš3)} âˆ´ tan15Â° = (âˆš3 - 1) / (âˆš3 + 1)

Abhilasha Kaundinya

0.26794919243
###### Like NextGurukul? Also explore our advanced self-learning solution LearnNext
Offered for classes 6-12, LearnNext is a popular self-learning solution for students who strive for excellence
Explore
Animated Video
lessons
All India
Test Series
Interactive Video
Experiments
Best-in class
books