Question No.12 - Question No. 12
The value of sin2 24° + sin2 66° + 2 tan 26° tan 64° is
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Answer:
sin² 24° + sin² 66° + 2tan 26° tan 64° = 3//
Step-by-step explanation:
sin² 24° + sin² 66° + 2tan 26° tan 64°
= sin² 24° + sin² (90°-24°) + 2tan 26° tan (90° - 26°)
= sin² 24 + cos² 24° + 2tan 26° cot 26°
= 1 + 2tan 26°/ tan 26°
= 1 + 2
= 3//
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