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Class 11
Maths :-NCERT Solutions - Trigonometric Functions

Page No 73:
Question 5:

Find the value of:

(i) sin 75°

(ii) tan 15°


Answer:

(i) sin 75° = sin (45° + 30°)

= sin 45° cos 30° + cos 45° sin 30°

[sin (x + y) = sin x cos y + cos x sin y]

(ii) tan 15° = tan (45° – 30°)


NCERT Maths Class 11

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