sin 30°+ cos 60° - sin 60° + cos 30°
Answers
Answered by
1
Step-by-step explanation:
=sin 30° + cos 60°-sin60°+ cos30°
=(√3÷2)+(√3÷2)-(1÷2)+(1÷2)
=√3×√3 +. 1.
2×2. 2×2
=3÷4 +1÷4
=3+1
4
=4÷4
=1
Answered by
24
Answer:
1 is the value of sin 30° + cos 60° - sin 60° + cos 30°.
Step-by-step explanation:
sin 30° + cos 60° - sin 60° + cos 30°
Know the values of:
sin 30° = 1/2
cos 60° = 1/2
sin 60° = √3/2
cos 30° = √3/2
Substituting:
1/2 + 1/2 - √3/2 + √3/2
1/2 + 1/2
1
∴ 1 is the value of sin 30° + cos 60° - sin 60° + cos 30°.
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