Math, asked by sugidaya1974, 1 year ago

using the formula sinA=root 1-cos2A/2, find the value of sin30 , it being given that cos 60 =1/2

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Answered by rakshit087

20

Hope this answers your question. If you have further question comment below.

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Answered by bhupeshsahu501

6

√1-cos2A=√2sin"A=√2X1/2=1/√2
;√1-cos2A/2=1/2√2

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