Find the value of sin75° and cos 75°
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Step-by-step explanation:
sin75°=sin(45+30)
=sin45cos30+cos45sin30
=1/√2.√3/2+1/√2.1/2
=√3/2√2+1/2√2
=√3+1/2√2
cos75°=cos(45+30)
=cos45cos30-sin45sin30
=1/√2.√3/2-1/√2.1/2
=√3/2√2-1/2√2
=√3-1/2√2
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