Question

sin²10° – sin²80° + sin 15°cos 75° +cos 15° sin 75°/cos θ sin(90°–θ)+sin θ cos(90°–θ).

Answer 1

Answer:

sin

Step-by-step explanation:

sin90°-a=cosA

cos90°-A=sinA

explain aab khud kr baap ky paise zaya mat kr 10th ka hai chapter 8