<h3><u>Answer</u> :</h3>
It is clear from the diagram that,
⇒ (2x - 5) + (x + 5) = 180
⇒ (2x + x) + (5 - 5) = 180
⇒ 3x + 0 = 180
⇒ x = 180/3
⇒ x = 60°
◈ From the geometry of figure,
⇒ ㄥ6 = (2x - 5)
⇒ ㄥ6 = (2×60 - 5)
⇒ ㄥ6 = 120 - 5
⇒ <u>ㄥ6 = 115°</u>
Answer:
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Step-by-step explanation:
Please don't delete this, I think I will be able to help! I just need to see the image.
Hello,
sin² x-cos² x=sin² x-(1-sin² x)=2sin² x-1
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