Math, asked by sanjay22raj, 1 year ago

tan70-tan20-2tan40=4tan10 prove it

Answers

Answered by mysticd

22

here we used
cos 2A = cos^2A - sin^2A

2sinAcosA = sin2A

Attachments:

Previous Question

Next Question

Similar questions

Math, 7 months ago

a bag contains rs 740 in the form of rupee, 50 p and 25 p coins in the ratio 5:8:4 find the number of coins of each type...

Math, 7 months ago

Write the first 6 multiples of the following numbers :- a . 4 b . 6 c . 8 d . 12...

Biology, 7 months ago

Observe the model of word pair and make pair suitably using the terms given in the box Model -Lungs: Respiratory system (Nervous system, Digestive system, Urethra, Heart, Lungs, Blood circulatory system, Excretory system, Brain, Respiratory system, Oesophagus) b. Give justification for making pairs...

Math, 1 year ago

prove that 1 by 3 root 2 is an irrationalnumber...

Social Sciences, 1 year ago

what are voluntary associations...

Economy, 1 year ago

What is "Eco-tourism"?

Environmental Sciences, 1 year ago

Compare the use of manure and Fertilizers in maintaining soil fertility...

Biology, 1 year ago

foodchain on dessert...