Math, asked by suzannathapa84, 5 hours ago

cos 2 27 q - sin 2 63 q =​

Answers

Answered by hukam0685
0

Step-by-step explanation:

Given:

 {cos}^{2} 27° -  {sin}^{2} 63°  \\

To find: Find the value of given trigonometry expression.

Solution:

Tip: Formula Used

cos \:  \theta = sin(90° -  \theta) \\

Step 1: Put the formula in given expression

 {sin}^{2} (90° - 27°) -  {sin}^{2}63°  \\  \\

Step 2: Solve subtraction

 {sin}^{2} 63° -  {sin}^{2} 63° \\  \\

Step 3: Cancel both

{sin}^{2} 63° -  {sin}^{2} 63°  = 0\\  \\

Final answer:

\bold{{cos}^{2} 27° -  {sin}^{2} 63° =0} \\

Hope it helps you.

Remark*: Question was corrected before answer.

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