(tanθ + cotθ)² = sec²θ + csc²θ
<u>Expand left side</u>: tan²θ + 2tanθcotθ + cot²θ
<u>Evaluate middle term</u>: 2tanθcotθ =
= 2
⇒ tan²θ + 2+ cot²θ
= tan²θ + 1 + 1 + cot²θ
<u>Apply trig identity:</u> tan²θ + 1 = sec²θ
⇒ sec²θ + 1 + cot²θ
<u>Apply trig identity:</u> 1 + cot²θ = csc²θ
⇒ sec²θ + csc²θ
Left side equals Right side so equation is verified
Answer:
360
Step-by-step explanation:
Answer:
what were the overlapping powers
Step-by-step explanation:
yahdnfnjsnsjdudn skzjdnsnsjiemfbcjsk
Answer:
20
Step-by-step explanation:
7 times 4 equals 28 and 5 times 4 equals 20 so the answer is 20
Answer:
49950
Step-by-step explanation:
111% of 45000 is 49950