Question

Open the picture please help me 10th class question

Answer 1

hello friend here is your answer ✍️✍️

please refer to the attachment
✌️✌️
we know that

sin 90 minus theta equals to cos theta

so it can be done by this

hope it helps you❤️

Answer 2

$here \\ sin^{2} 11^{0} - cos^{2} {79}^{0} \\ = {sin}^{2}(90 - 79) ^{0} - {cos}^{2} {79}^{0} \\ = {cos}^{2} {79}^{0} - {cos}^{2} {79}^{0} \\ = 0$

✨HOPE THIS ANSWER HELPS YOU✨