if tan theta equal to 4 upon 5 find the value of cos theta minus sin theta upon cos theta + sin theta
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# means theta
tan#=4/5
by Pythagoras theorem
h=4^2+5^2
h=√41
5-4/√41 /5+4√41
1/√41 / 9/√41
1/√41*√41/9
1/9
tan#=4/5
by Pythagoras theorem
h=4^2+5^2
h=√41
5-4/√41 /5+4√41
1/√41 / 9/√41
1/√41*√41/9
1/9
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