Question

evaluate cos 45 by sec 30 + 1 by sec 60
promisly I don't know pls a answer me...
with explanation and steps

Answer 1

✔️✔️cos 45°sec 30°+1sec 60°

=cos 45° . cos 30°+ cos 60°

✔️✔️✔️values :-

⭕️cos 45= 1/√2

⭕️cos 30= 2/√3

⭕️cos 60= 1/2

✔️✔️substituting;

=(1/√2)/(2/√3)+1/2

=1/√2×√3/2+1/2

=√3/2√2+1/2

=(√3+√2)√/2√2
➖Final answer.




✔️✔️✔️If you wanna simplify further the answer will be √6+2/4.




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