Prove -
cos30°-sin20°÷cos40°+cos20°=4÷√3×cos40°×cos80°
Answers
Answered by
2
Step-by-step explanation:
cos(30)°−sin(20)°÷cos(40)°+cos(20)°
=1.3592424364
4÷3×cos(40)°×cos(80)°
=0.1773629621
1.3592424364 is not equal to 0.1773629621
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