Question

Find the value :-
Cos 45 - Sin 45°​

Answer 1

Answer:

0

Step-by-step explanation:

[1st method]

we can write cos 45 as sin (90-45),i.e.,sin 45

cos 45 - sin 45 = sin 45 - sin 45

=>  sin 45 - sin 45 = 0

[2nd method]

cos 45 = 1/2

sin 45 = 1/2

so, 1/2 - 1/2 = 0

∴The value of cos 45 - sin 45 is 0.

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