2 answers:
Step-by-step explanation:
• Remember → 1 + tan²x = sec²x
• But sec²x → 1/cos²x
• Remember from the first identity of trignometry;
[ <em>c</em><em>o</em><em>s</em><em>²</em><em>x</em><em> </em><em>+</em><em> </em><em>s</em><em>i</em><em>n</em><em>²</em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em> </em>].
• Therefore: [ <em>c</em><em>o</em><em>s</em><em>²</em><em>x</em><em> </em><em>=</em><em> </em><em>1</em><em> </em><em>-</em><em> </em><em>s</em><em>i</em><em>n</em><em>²</em><em>x</em><em> </em>]
Hence proved.
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Answer:
Answer is 9.
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The answer is 42 because there are 10 adults and
M=4(10)+2
M=40+2
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Yes because 4 times 5 is 20 and 15 + 5 is 20
The domain is the set of all real numbers.
The range is the set of all real numbers.
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Ex: the total number when the degrees is added together should be 180