Question

tan 45. cos 30 + cos 45. sin 60​

Answer 1

Answer:

Step-by-step explanation:

Hey there!

We know that,

sin30 = 1/2

cos45 = 1/√2

cot45 =1

sec60 = 2

sin60 = √3/2

tan45 = 1

cos30 = √3/2

sin90 = 1 .

sin30°/cos45° + cot45°/sec60° - sin60°/tan45° - cos30°/sin90°

= 1/2 ( 1/√2 ) + 1 / ( 2 ) - (√3/2 ) / ( 1 ) - (√3/2 ) / 1

= (√2 / 2 )+ 1/2+ ( - √3/2 ) - ( √3/2 )

= [√2/2 + 1/2 - 2√3] /2

= [√2 + 1 - 2√3 ]/2

=[ 1 + √2 - 2√3 ] / 2

Answer 2

Answer:

tan45°=1

cos 30°=2/√3

cos 45°= 1/√2

sin60°= 2/√3

tan45°.cos 30°+cos 45°.sin60°

1.2/√3+1/√2.2/√3

Step-by-step explanation:

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