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Start learning 50% faster. Sign in nowWe know that If tanA x tanB = 1 then A & B are complementary angles it means A + B = 90˚ Here 20˚ + 70˚ = 90˚ & 23˚ + 67˚ = 90˚ So tan 20˚ x tan 70˚ = 1 & tan 23˚ x tan 67˚ = 1 Hence tan 20˚ x tan 23˚ x tan 67˚ x tan 70˚ = 1
9 × 40× 242 × 182= ?2
(115 × 17 × 3)/(23 × 51) + ?3 = √169
41.66% of 888 + 66.66% of 1176 = ?2 - 4√ 16
Find the simplified value of the given expression.
(-8) x {15 - (-4) x (-5)}
22% of 560 + 34% of 2160 × 5/12 =? + 16% of 920
25% of 1600 – 152 = ? × 5
(49 x ?) / 3.5 + 389 = 627
(180 ÷ 22 ) ÷ (60% of 30) = (? ÷ 2)
