Question

2tan 45°+cos 45°+sin 30°​

Answer 1

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Value of

• Tan45° = 1
• cos45° = 1/_/2
• sin30° = 1/2

2Tan45° + cos45° + sin30°

= 2 × 1 + 1 / _/2 + 1 / 2

= 3 + 1/ _/2 + 1/2

= ( 6_/2 + 2 + _/2 ) / 2_/2

= ( 7_/2 + 2 )/ 2_/2