Question

The value of sin60ºcos45º - cos60º sin45º is Select one:

Answer 1

Answer:

$you \: \: know.... \\ \\ sin(x - y) = (sinx.cosy - cosx.siny) \\ \\ \\ = > sin60.cos45 - cos60.sin45 \\ \\ \\ = > sin(60 - 45) \\ \\ \\ = > sin25 { }^{o} \\ \\ \\ = > \frac{2}{5}$

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Answer 2

Step-by-step explanation:

.......sin 60° = √3/2

cos 45° = 1/√2

cos 60° = 1/2

sin45° = 1/√2

=sin60° cos45° —cos60° sin45°

= √3/2×1/√2 — 1/2×1/√2

= √3/2√2— 1/2√2

= (√3—1)/2√2

your answer is (√3—1)/2√2...

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