Math, asked by AbhijithJJ, 6 months ago

prove 4cos18.cos42.cos78=cos 54
please can anyone prove it?

Answers

Answered by smartoldie

1

Answer:

I'm sorry.... this is kinda difficult... like I mean I haven't yet learned these things

Answered by korthamyamini525

0

I hope it's helpful for you

Attachments:

Previous Question

Next Question

Similar questions

Math, 3 months ago

find the number of terms in each of the following expressions and mention the name of polynomial 3x power square minus 4y plus 2...

Science, 3 months ago

Eno fruit salt is the mixture of sodium bicarbonate and nitric acid .

Hindi, 3 months ago

वर्षा और उसके स्रोत के बारे में विस्तार से लिखए l (Rainfall and its sources ) please fast...

Physics, 6 months ago

which of the following denotes the smallest temperature 1. 1 degree on the celcius scale 2. 1 degree on the Kelvin scale 3. 1 degree on the Fahrenheit scale 4. 1 degree on the reaumur scale...

English, 6 months ago

Give me a short summary of the poem lokhinvar...

English, 10 months ago

Alexander,as a young man went on military campaigns with his father.(Change to complex)...

English, 10 months ago

fill in the blanks with the correct form of infinitives with or without to...

Math, 10 months ago

the diagonals of a quadrilateral PQRS intersect at O. prove that PQ2+SR2=PS2+QR2...