Question

Please Solve all this questions I will mark u as BRAINLIEST​

Answer 1

Answer:

below are the ans

Step-by-step explanation:

1. sin60°cos30°+cos60°sin30°= (√3/2×√3/2)+1/2×1/2

=3/4+1/4

= 4/4=1

2. cos60° cos30°-sin60°sin30°=(√3/2×1/2)+(√3)2×1/2)

=√3/4+√3/4

=√3/2

3. cos45°cos30°+sin45°sin30°=(1/√2×√3/2)+(1/√2×1/2)

=√3/2√2+1/2√2

=(√3+1)/2√2

4.sin60°sin45°-cos60°cos45°=(√3/2×1/√2)+(1/√2+1/2)

= (√3+1)/2√2

5. question = (1/4+4-4)(2×4/3)=1/4×8/3=2/3

6. by verification method A=45 ,B=15

7.by verification method A=45,B=15