4. (tan 0 + 2) (2 tan 0 + 1) = 5 tan 0 + sec²0
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Answer:
By opening the brackets,
2tan²0 + tan0 + 4tan0 + 2
2tan²0 + 2 + 5tan0
2(tan²0 + 1) + 5tan0
2sec²0 + 5tan0
Looks like I am getting 2sec²0 instead of sec²0
Step-by-step explanation:
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