Question

evaluate sin 450 + cos 450​

Answer 1

$\large\rm { sin 45° \ cos 45° (tan 45° + cot45°)}$

$\large\rm { = ( \frac {1}{ \sqrt{2}}) ( \frac {1}{ \sqrt{2}}) (1+1) }$

$\large\rm { = \frac {1}{2} × 2}$

$\large\rm \rm { = 1}$

Hence proven ✓

Answer 2

• Step-by-step explanation:
• \large\rm { sin 45° \ cos 45° (tan 45° + cot45°)}sin45° cos45°(tan45°+cot45°)
• \large\rm { = ( \frac {1}{ \sqrt{2}}) ( \frac {1}{ \sqrt{2}}) (1+1) }=(
• 2
• 1
• )(
• 2
• 1
• )(1+1)
• \large\rm { = \frac {1}{2} × 2}=
• 2
• 1
• ×2
• \large\rm \rm { = 1}=1
• Hence proven ✓