Sec²43 - tan²x = 1 what is x?
Sin²50 + cos²x = 1, what is x?
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Comparing with identity sec² theta - tan² theta = 1
sec²43 - tan²x = 1
we can say x = 43°
Comparing with sin²theta + cos²theta = 1
sin²50 + cos²x = 1
= x = 50°
Answered by
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Answer:
1. x=43 2.x=50
Step-by-step explanation:
the formula
1+tan²x=sec²x
on changing sides
sec²x+tan²x=1
another formula
sin²x+cos²x=1.
hence justifying my answer
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