sin^2 40 -cos^2 50 is always 1 true or false
Answers
Answered by
1
Answer:
false
Step-by-step explanation:
this is the right answer
Answered by
5
Answer:
false
because sin²40 - cos²50 is = 0
Step-by-step explanation:
sin² 40 - cos²50
= sin²( 90 - 50) - cos² 50
= cos²50 - cos²50. ( sin(90 - ∅)= cos∅]
= 0
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