cos power 4 -cos square x equals to one . then sin2x will be
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Step-by-step explanation:I am in class 8
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Answer:Solution :
Let us assume , 5 + √3 is rational.
Let 5 + √3 = a/b , where a,b are
integers and b ≠ 0.
√3 = a/b - 5
=> √3 = ( a - 5b )/b
Since , a , b are integers , (a-5b)/b is
rational , and so √3 is rational .
This contradicts the fact that √3 is
irrational .
Hence , 5 + √3 is irrational.
Step-by-step explanation:
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