sin^2 6°-sin^2 12°+sin^2 18°-sin^2 24°..... upto 15 terms. sin 78°=0 sin 42°+sin 54°+ sin 66°+ + sin 18° sin 6°+ where )=0.5 (your required answer),...
Umakant biswal
Last Activity: 7 Years ago
DEAR MASTEE kindly recheck the question and put a image if u have one , there are no attachment in the question . and also your text are not clear , waiting to hear from you again with a new doubt ALL THE BEST REGARDS
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