Evaluate sin45 cos30-cos45sin30
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Answer: Hope it helps
Step-by-step explanation:
sin45= 1/√ 2
cos30= √ 3/2
cos45= 1/√ 2
sin30= 1/2
therefore, sin45 cos30-cos45 sin30
=1/√2 x √ 3/2-1/√2 x 1/2
=√ 3 - 1/2√2
=(2√6 - 1)/2√3
=2√3(√2-1)/2√3
=√2-1
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