Math, asked by HappiestWriter012, 1 year ago

if sina = sinb then a = b.. sin80 degree = sin100 degree. So, 80* = 100*?



explain

Answers

Answered by reck2
7
Value of Sin80° is 0.98480775 and also this value is same for sin100
Now sin80 can be written as Sin(90-10) which is equal to cos10°
Similarly sin100 can be written as Sin(90+10) which is in second quad and hence can be written as Cos10° so , sin80 = sin100
But 80 can't be equal to 100 because trignometry includes quadrants and on using it both angles comes out to be 10° and hence
10 = 10 which is true
And 80 can never be equal to 100
Answered by muddassir47
1

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