## RS Aggarwal Solutions Class 10 Chapter 7 Trigonometric Ratios of Complementary Angles Ex 7

These Solutions are part of RS Aggarwal Solutions Class 10. Here we have given RS Aggarwal Solutions Class 10 Chapter 7 Trigonometric Ratios of Complementary Angles Ex 7.

Other Exercises

Question 1.
Solution:
(i) (ii) (iii) (iv) (v) (vi) Question 2.
Solution:
(i)  LHS = cos81° – sin9°
= cos(90° -9°)- sin9° = sin9° – sin9°
= 0 = RHS

(ii) LHS = tan71° – cot19°
=tan(90° – 19°) – cot19° =cot19° – cot19°
=0 = RHS

(iii) LHS = cosec80° – sec10°
= cosec(90° – 10°) – sec(10°)
= sec10° – sec10° = 0
= RHS

(iv) LHS = cosec72° − tan18° (v) LHS = cos75° + cos15° (vi) LHS = tan66° − cot24° (vii) LHS = sin48° + sin42° (viii) LHS = cos57° − sin33° (ix) LHS = (sin 65° + cos 25°)(sin 65° − cos 25°) Question 3.
Solution:
(i) (ii) (iii) (iv) (v) (vi) Question 4.
Solution:
(i) (ii) (iii) (iv) (v) Question 5.
Solution:
(i) (ii) (iii) (iv) (v) (vi) (vii) Question 6.
Solution:
(i) (ii) (iii) (iv) (v) Question 7.
Solution:
(i)  LHS = sin (70° + θ) − cos (20° − θ) (ii)  LHS = tan (55° − θ) − cot (35° + θ) (iii)  LHS = cosec (67° + θ) − sec (23° − θ) (iv)  LHS = cosec (65 °+ θ)  sec  (25° −  θ) − tan (55° − θ) + cot (35° + θ) (v)  LHS = sin (50° + θ ) − cos (40° − θ) + tan 1° tan 10° tan 80° tan 89° Question 8.
Solution:
(i) (ii) (iii) (iv) Question 9.
Solution: Question 10.
Solution: Question 11.
Solution: Question 12.
Solution: Question 13.
Solution: Question 14.
Solution: Question 15.
Solution: We hope the RS Aggarwal Solutions Class 10 Chapter 7  Trigonometric Ratios of Complementary Angles Ex 7 help you. If you have any query regarding RS Aggarwal Solutions Class 10 Chapter 7  Trigonometric Ratios of Complementary Angles Ex 7, drop a comment below and we will get back to you at the earliest.