Question

4) Evaluate :
sin 60° - cos 30°/
sec 45°​

Answer 1

༶•┈┈⛧┈♛Answer♛┈⛧┈┈•༶

=> sin 60° - cos 30° / sec 45

=> We know that,

• sin 60° = {(√3) / 2}

• cos 30° = {(√3) / 2}

• sec 45° = (√2)

=> Putting the values, we get :

=> sin 60° - cos 30° / sec 45°

=> {(√3) / 2} - {(√3) / 2} / (√2)

=> {(√3) / 2} - {(√3) / (2√2)}

=> On solving above equation, you will get the answer.

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Answer 2

Answer:

ANSWER IS :- 1/ROOT2 or sin 45°

Step-by-step explanation:

HERE SIN 60° = ROOT3 /2

COS 30°= ROOT3/2

SEC 45°= ROOT2

THEREFORE, (ROOT3/2 - ROOT3/2) / ROOT2

THAN WE GET , (1/2) / ROOT2

& by (1/2 )/ ROOT2 , WE GET

= ROOT2/2

& AGAIN BY SOLVING ,WE GET

= 1/ROOT2

HENCE ANSWER IS :- 1/ROOT2 or SIN 45°

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